I've been thinking of getting the Pro Controller to play on PC (and the Switch itself later down the line). Have any of you who got the controller tried it on PC  already? How is it? Is it too much of a hustle to set up?

Really? Noone has tried the Pro Controller on their PC?

i dont have one ;-;

Don't have Bluetooth on my PC :/

I have an SPro, and I can confirm that it connects natively on the Windows 10 Bluetooth stack, but it's just Directinput, not Xinput.
There's more info here: https://www.youtube.com/watch?v=xtCTy0N1BV8

The UPro controller works with Xinput on PC, when you previously install WiinUSoft

Guess your questions weren't as urgent as they seemed.
Still, if you have any particular question, ask away.

Just tried playing Unravel in Origin with the SPro, and I noticed that it automatically resyncs although the leds stay in syncing mode. The UPro you had to unpair and pair again for it to work.

Still hope that WiinUSoft adds SPro compatibilty. Button prompts I get from Directinput are "Button 3"... very helpful.

Costs too much so...

Nope, but it's the first thing I'm doing once I get one. Can't wait to ditch WiinUSoft honestly, it's a chore having to use that every time I want to play with the Wii U Pro.