According to what I can find, most cycle accidents happen within 10-15 miles from home, so be careful on those short runs! May be more from complacency in familiar surroundings than other factors.
I live in Iowa where there is no helmet law. I ride occasionally with some buddies who own cruisers, and attend some local events. By a wide margin they are more apt to ride without gear, save for the ubiquitous Sons of Anarchy tshirts and such than other bikers. Not judging, it's just what I see. We have our fair share of squids as well.
As much as Harley is mentioned, why do I see the squids more on gixxers than other sport bikes? Again, just an observation in my neck of the woods...
A positive trend is taking place over the last couple years, where guys are getting into the nicer gear on the market, and wearing it as much as they are tricking out their bikes.