Yes I have also tried this with the larger girth Retainer Bands and it works well. The width is perfectly sized to fit inside the base band however to be completely concealed within the folds you must remove the snap buttons. Although you are getting the tighter fit with the band so the snaps are kind of redundant anyway. I tried to use the RB’s with the buttons installed but the hole it created in the rubber band caused it tear apart.
Why don’t you give me some details on your size and we will send you a couple of the larger sized Retainer Bands for testing out the idea for your feedback.