First of all I ignore anyone telling me what I should or should not wear. I'm an adult and can figure it out for myself. I pretty much can't stand Grant and his yammering on about this and that.
I wear bibs and jerseys. Occasionally, in winter I wear jeans for short commutes but I have a whole closet full of lycra that begs to be worn. I do have this weird issue with wearing lycra on mountain bikes. A short circuit in my head says this is wrong. After riding in an area with mountain bike racers that are generally clad exclusively in lycra and jerseys I think that may be at an end.