I know it’s, like, the most trivial thing. But not only am I on team “vertical tabs” but I’m team “right-side tab bar”!
I’ve not seen anyone else do this. But I heard a great argument for right-side nav in a code editor: a left-hand sidebar moves all your code around when you minimise/toggle the sidebar; a right-hand sidebar does not.
I like this. So I applied it to my browser too!