My husband and I have tried various forms of FAM since we've been married (almost seven years now) and LOVE it. (By various forms, I mean charting temperatures or cervical fluid, or a combination of both, etc.) I've never had to be on any hormones, always hated condoms, and feel totally empowered because I know how my body works better than I ever had before. Like one commenter said already, though, the one "kink" in the plan is that it does require self-control and the cooperation of your husband. :) My husband is totally supportive of NFP (natural family planning, the acronym I'm more used to using) but sometimes we both lack the self control to practice it well. Hence, Baby Number One was conceived about 18 months after we'd been married. :) We planned Baby Number Two when our first son was 2.5 years old and it took us only two months to conceive. Then Baby Number Three, due any day now!, came along 10 months after our daughter was born -- not completely unexpectedly but again because we were being lax on the rules. :) However, our commitment to NFP also has an element of trust that, ultimately, God's in charge. If we're going to conceive, it's a blessing and God's timing. So we're okay with that "risk." And it's probably why we're not always 100% cautious. :)
All that said, again, you don't deal with the hormones. It IS effective when the rules are followed. And I find it can strengthen your sexual relationship with your husband in many ways. I've been both a practitioner and an instructor, and in both capacities I've seen this happen. Many couples are wary of the periods of "abstinence" that NFP requires during fertile times, but I've found them, frankly, to be a nice little reprieve each month and my husband makes them extra special by "courting" me more during that time... leading to a honeymoon effect, of sorts, when the fertile time is past. (Also, there are other romantic things you can do during that time! ;))
Currently, (well we're pregnant, but before and after this pregnancy, lol) we're practicing the Ovulation Method by Family of the Americas (familyplanning.net, I think) and it charts only cervical fluid. For me, this is the least hassle and equally as effective as charting temperatures had been. I've had many couples start out doing both, for their peace of mind. Problem with temperatures is that the rules for taking and recording them are very regimented: same time every day, must get at least 4 hours of sleep prior to taking, etc. Requires some ability with averages and chart interpretation. :) But it tends to make men more comfortable because it's less "subjective" than just relying on the woman's private observations of cervical secretions. And in those first few months of learning (wherein I usually recommend at least one month of complete abstinence to be safe) it does help the woman to feel more confidence in her own observations as well.
If you decide to do it, find a good instructor, who is willing to look at your charts with you monthly and go over the rules a few times (you'll need a couple reminders at first) and is available via phone if you have a question. I'd recommend taking your husband with you to the training session (if you can find one) so he is on board and understands how it works. Also, make sure you've figured out some way to communicate with one another when you're (potentially) fertile and not, so you can make plans :) ... I had a client who put a little desk ornament on her husband's desk. On one side it said "Love me" (for the times when she was not fertile) and on the other side it said "Love my dog" (for the times when she was fertile). :)
And, yes, by the way, you will need a special thermometer if you decide to chart temperatures: basal thermometer, but basically, any digital thermometer that gives you to the tenth of a degree will work. I think the "distinction" is about accuracy and can be a leftover from the days of mercury thermometers where it was hard to get the tenth degree.
And, also, yes, it can take some time to "trust the method." Give yourself at least a month of abstinence to chart without worry, maybe more. But the fact is, it'll take several months of "hey, it worked! we're NOT pregnant!" for you to start to feel comfortable about it. :) It is a leap of faith, truly, and requires some diligence on your part, both in charting and in following rules. But I think it's absolutely worth it!