Bike ≠ Car ≠ Ped.
Join Date: Jul 2007
Location: Washington, DC
Bikes: Some bikes. Hell, they're all the same, ain't they?
I think my opinion might illustrate why you can't find any plain all-white jerseys...
I would hate to wear anything over a jersey's rear pockets. It's bad enough that guys these days wear their office shirts billowing out in back like clown suits (nobody knows about shirtstays, aka "shirt-to-sock suspenders", anymore), but jersey pockets would make it worse. Plus, if it fits right for the bike, the tail will hang low when standing, and either go under your belt or help bulk up the billowing lower back of your dress shirt.
I would also feel nasty all day if I wore the same sweaty undershirt, even if it was a plain tech shirt with no pockets. I always change clothes (but then again, I've got a uniform and a big locker, so that's not necessarily a fair comparison with most people).
The tech-y white undershirts I use at work are Under Armour and Champion (got the Champion shirts from Target). The UA logo can be right under the breast pocket, so it's not too bad. The Champion logos are reflective light gray, so they don't show through very much at all. They're all a compression fit, too, and cause less friction against dress shirts, so they're more comfy overall, IMO.
But, again, I avoid wearing these all day if I can help it.