As an XBox controller replacement for PC it feels great. The sticks feel great, the buttons all feel good. I haven't used it with my Switch yet but appreciate that's an option: next time I pick up my Switch I'm sure this'll be much more pleasant to use than the joy-cons.
My biggest complaint is that I wish they'd just gone with replaceable AA batteries rather than a built-in battery. The battery life is decent but not amazing, and I've gotten interrupted in the middle of a game more often than I'd like: I'd rather be able to just swap AA batteries and be using the controller again in 5 minutes like I can with an XBox controller. Seems like kind of an odd choice given the "no drift" design of the sticks as well: part of why I bought this controller was because it seemed like it might be more durable than the stock XBox controllers, but if it's got a fixed battery that will eventually degrade I don't know how true that'll end up being.