I have not experienced this, but I wanted to share what I do know. If/when my husband and I go permanent, I will probably be leaning toward this procedure. A co-worker of mine had it done sometime in the last year, and she loved it. She said the in-office procedure was like a normal pap when the doctor inserted the "spring" or whatever into her tubes. She was up off the table and ready for work. She actually said, "Can I do that again??? Why didn't I do this sooner?" To my knowledge (because I asked her) she had no side-effects, no problems, etc. I am not sure about the follow-up, but I imaging they are checking for scar tissue growth, since the whole point is that your tubes will be blocked.
The only consideration I would have is that it is a newer procedure. The prevention statistics are very high (higher than a tubal ligation I believe) but there is not enough long-term research to show if, like a tubal ligation, the failure rate rises over time. Also unlike a tubal, it is very permanent--they cannot remove the scar tissue and make your tubes usable again. Dig around and find out what the long-term follow-up is to make sure there are no changes, etc. I'm not sure how long you would have to wait after giving birth to have the procedure done, either. Good luck! I do not want to be on hormones either when I'm finished having kids. They haven't been agreeing with me lately. :(