I had one and got rid of it. Don't know if it was my gut or what, but after wearing it for awhile the bottom half of the buckle started pulling on and enlarging the holes made by the teeth that dig in to attach the buckle. I tried cutting off a half inch or so and resetting the buckle and it did the same thing. The guy I sold it to is very happy with it, so it may just be my body shape that didn't agree with it. Also, in KORE's defense I never contacted them about it, I'm sure they could have helped me out or figured out the issue but by that time I'd bought a Daltech Force SuperBio belt that I liked so it wasn't worth the trouble for me.
As negative as that sounded, though, if you want fine adjustments there's no better option IMO. If it weren't for the issue mine had, it would have been my favorite belt for that reason.