I don't really like the design of those joy-cons clones. From the images it feels they could snap out from the screen if you put too much pressure. Maybe I am wrong though, I should test it.
When I first got used to the steam controller, it was the best I'd ever used. Valve managed to improve upon it with the Index and Deck. I hate gaming at a friend's house and having to go back to what amounts to a standard controller these days.