Switch users from admin bar?

Hi. This is really useful for a shop owner that has a few people that make changes so you are then able to see who has done what. However, it would be great if you could switch users from the top menu bar i.e. Where it says “Hi, Shop Owner”. I know you can switch back to the previous account but it would be good if you had a list of names that you could switch to, so you don’t have to go to the Users page to do this.