So, first thread here, been quite a while without sharing anything due to the fact that I haven't actually had anything to share which hadn't been shared already.
I did stumble across this.. Dare I call it an exploit?
While at barbershop, you'll notice that your shoulder, head and tabard are removed during the seat-session. These can be made visible again, simply by de-equipping and then re-equip the items or just swapping them with another pair of shoulders/head/tabard.
This is, in my opinion great considering I'd like my hair color and hairstyle to match my current gear, but due to the gear being made hidden I can't really compare what styles/colors would fit best.
Reason I consider this some sort of exploit is due to the error message you get by de-equipping / equipping the items as you are seated in the barbershop chair:"You can't do that while in the barbershop."
Edit: Added a picture