I have to say, I only ever ride in jeans these days. Can't even remember the last time I wore a pair of breeches...probably about 10 years ago. Maybe. The only jeans that I've ever found to fit me are a brand name called RiverTrader. But as far as I know it's only stocked by a store here called Mr. Price, so they're pretty cheap - about R120...which is...16USD...well, not sure if that's cheap or not for the States, but it's pretty cheap here. They're stretch denim, but I've got some that are about six or seven years old and back then I was riding about five hours a day in racing saddles and english saddles. Maybe they'll ship? I <3 my RT's!
It is not 'cool' to ride without a helmet! period.