I have always found that workspaces were a way to "save a game" and I don't have to switch a lot so I never bothered using anything else than my desktop's nativ

I have always found that workspaces were a way to "save a game" and I don't have to switch a lot so I never bothered using anything else than my desktop's native shortcuts. On the other hand, window switching happens often and needs to be fast and as a vimmer I always found that mod + j/k was a natural candidate. Anyone else using anything out of the ordinary that they think is clever ?