yeah... but i remember it not being their core focus and it ending up kinda like a mcdonald's salad. you can do it, but there are better places to go for that.

is it good? like if i'm doing something new and something new wants to pop a floating window, can i just keep doing my thing or do i have to start thinking about my window manager?

i find that dedicating a screen to tmux and another screen to a classic desktop environment gives the best of both worlds. (subject to the limitation of becoming dependent on multiple screens)