I had something like that and thought it was awful (personally). I would position it just right, and it would slip up when I bent down while my pants would slip down. I was constantly adjusting it and getting really frustrated.
Personally, I didn't wear a lot of maternity clothes during both pregnancies. I found that forgiving elastic waisted pants (NY & Company is a good place to find dressier ones) and sweats were great. Sure, I had maternity jeans, but I just pushed my regular clothes to the limit as much as possible.
Another thing I couldn't bring myself to wear: maternity underwear. I just bought bigger ones and was fine both times around.
Good luck!