Thanks SBeach,
I currently own a few pair of those briefs, however, wearing them under my bibs is like wearing an adult diaper, it wasn't pleasant. I am looking for something very similar to those, but not padded.
My commute to work will be just over 16 miles direct, 20 miles for a more scenic route. Due to the length, i would be much more comfortable commuting in my current bib tights, then a baggy short or any other type of clothing.
What it comes down to, is that i dont like the idea of using my shorts twice without washing them... If i could just find some type of seemless non-padded liner.