Here's a (somewhat long) list of bikeable pants / shorts / knickers that can 'look' semi (or very) normal off the bike. Note, I don't own all of these, but I do own some. Not all of these are shorts, but I figured I'd share the entire list. Also, I have a number of Nau pants / shorts that ROCK for riding in. The wearevers, in particular, are hella leightweight pants... so breezy in the summer... However, the styles of nau that I own are no longer sold. For me, the big issues is gusseted crotch. I'm not much of a chamois man...

Champ Knickers
Mountain Hardwear Matterhorn Convertibles - they also make a short that might be nice
Prana Katek Convertible - have these LOVE them as shorts only or when I ride to work zip on the bottom half
Beyond Fleece Steel Shock Pants - can greatly customize these
Endura Firefly
Endura Venturi 3/4
Outlier OG Wool
Swrve Pants
Swrve Knicker
Re Knicks Wool
Ibex Alpstar
RailRiders Backcountry Khakis
RailRiders Rock Jeans - have these, they are sweet (and fit tighter than most similarly 'sized' pants... so don't flatter yourself or you might not be able to breathe)
RailRiders Lined Yukon
Mountain Hardwear Silcox 3/4
Cordarounds (Cords or Bike to Work)
Harlot Murray
ShowersPass Hybrid Zip Off - wish I knew about these before I bought the Prana's
Ralpha Fixed