Jeans if I am just going round town at 30-40 mph (Cyclists wear less and go faster) but do feel vulnerable and textile trousers the rest of the time.
On the very rare occasion, trainers with the laces tucked in if only nipping to the shops but otherwise, proper bike boots even when wearing jeans.
Always wear a textile jacket and leather gloves.
Like some of the above, I gave up wearing a pisspot helmet when I turned 16 and started riding on tarmac. Ever sicne it has been a full face helmet though I will admit, on some occasions (again around town) I have been known to ride around in hot weather with the flip front open.
TBH, people that wear the full power ranger kit with matching helmet/gloves/boots look like muppets whether they are on a scooter or a superbike