Oh yeah, I've seen people riding in t-shirts already this year already, not to mention all those posers out there riding in their atheltic pants, you know the ones, tear aways.
My comment however, goes out to everyone, all year round. Always dress safe, no matter how short or how long your trip may be. Those who think they won't go down, of course will.
Harley guys who wear their little beenie helmets, y'know what I say to them? Do you think that little old granny who's driving her stationwagon out on a sunny day who decides to switch lanes on the freeway looks out her window, sees the Harley and says, "Oh thats a Harley, I won't turn in front of that bike." Nope. Doesn't matter what kind of ride you have, the crazies out there don't descriminate against which bike they're gonna roll over.