Well, there is diaper butt and then there is DIAPER BUTT. My Shebeest and LouisGarneau padded tights and knickers just look like some very descrete gently rounded padding with a defined line of stitching around it, so unless you have no brain you easily can guess what it is (Oh, it's stiched in, so I guess it CAN'T be an incontinence napkin!). No giant pillow effects.

Then again, I once tried on some really expensive PI shorts that had chamois that stuck out in the back like a SHELF! I could have lined up some jars of jelly on that baby! Other than that slight "issue" however, those shorts fit me fine. (but no, I did NOT buy them!)

So I think if the chamois doesn't stick out in bizarre clownlike ways, I have no problem with people seeing it.