You have to keep in mind how you appear to LEOs when they pull you over. I know, book, cover, etc, and you don't want to be judged by your appearance but you are. Let me put it this way:
I've been to vape meets and I've watched the streaming shows and the youtube videos. A lot of vapers are former smokers. A lot of smokers who get into vaping as a lifestyle choice have made other alternative lifestyle choices, tattoos, piercings, etc. These things (esp in my region) are associated with a "certain demographic" of people. If you're polite and respectful and not breaking the law, LEOs, on the whole, will get over your appearance and give you a listen. If you assume that they are going to "bust" you for whatever and take the offensive with them, they will be less inclined to listen.
I've got tattoos and I used to have piercings. I have been approached by LEOs, and met with them, etc, in a work environment where I wear long sleeved button-down shirts and look like a plain ol' computer technician. I still get a little jumpy (for reasons explained in the next paragraph) but they don't say boo to me, and I usually have my twist/vivi mini (decorated with pink flowers <3) sitting on my desk.
I have also been in situations with LEOs while wearing my... outside of work clothes, usually jeans and a tank top, sometimes something a little edgier, with my tattoos (forarms, back, etc.) showing, my hair dyed funny colors, and piercings sticking out of my face. I was stopped on campus of my uni one year because "my bag looked heavy" and I was searched for alcohol. I had my car searched coming home from a party. I don't do anything illegal. They didn't smell anything, I wasn't swerving or stumbling. I never have more than A drink and drive and I'm of age. But I fit a "certain demographic" and I understand that.
It just is.
(Edit: I don't agree with profiling. But I live in MS and it... really, it just IS around here. I can talk about how wrong it is all day and it wouldn't change it. So I make sure to show my nicest self rather than my ... when I interact with LEOs, so that they realize I'm not some hoodlum just because I have tattoos.)