12 of my 25+ years in the saddle have been on HDs. Have worked for HD, Honda, Yamaha and a couple independent shops, plus my own a couple times.
Have worked shops/dealers in LA, MS, TN, WA, ID. There are some good ones, but the vast majority, regardless of the brand carried, have been horror shows. If the owner doesn't ride, and you do... and god forbid you ride a vintage machine, the customers spend more time gawking at it or trying to sit on it than they do looking at the brand new shiny stuff on the floor or displays.
There tends to be a high turn over rate in parts and service. Try and work your way up to service writer, best pay in the building excluding the GM and owner. If you are good at it (high profit margins and lots of repeat business) you have a job for as long as you want it.
Motor clothes girls? Don't even go there... as far as they are concerned you're a gay Catholic priest with a pocket money job on the side.
Bad experience? Nope, like I said, I have bike shop apps out right now. I miss laughing at the rubes with more money than brains coming in buying their "100% American made (not since the 50s)" bikes, gear and accessories.