Obviously, wear whatever you want in your everyday cycling. (hey, clean is more than I aim for)
But there is credit to the idea that "too much" cycling gear alienates some people. If you're trying to sell cycling as a common form of transport to a non-cyclist, it helps if you can show that all the doodads aren't necessary and you don't have to embrace Lycra as a fashion choice. All most people would need to comfortably cycle a fair distance is a pair of comfy pants without lumpy seams in the crotch, and a helmet. Short distances just a helmet. So for promotional purposes - yeah, I'd make an effort to show that we don't all look like aliens, some of us even look like the normal people next door 
Heh - I just remembered something I once read about confrontations between cyclists and I think it was hikers in the woods (who complain here about mtbikers zipping by and scaring them): if someone yells at you or is mad: stop, take a deep breath, and take off your helmet and goggles. It's a lot harder to argue with a normal friendly face...
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett