I honestly haven't tried the rolled mouth since I started making them. Between winter and being pregnant I'll probably be pretty much out of the saddle until June... I would say the rolled mouth is more "bit" like, since most regular bits are round. They also seem to be a little stiffer, although they should still conform pretty well. I wouldn't be able to do a built in chin strap on the rolled mouth. A little off topic, but thanks to a little push and faith from one of our lovely members, if anyone is interested in getting a leather mouth put on different cheeks, pm me.