Yes. My children use a Wacom tablet with Krita. It was actually less trouble to get it working on Linux than on my MacBook. On Linux I just had to plug in the Wacom table and I was immediately able to start drawing in Krita.
For me, plugging it in worked flawlessly, getting it to work with Bluetooth took some fiddling.
Got it to work but it was one of those Linux things where I don't know what I did to get it to work, but it works now, and the next time I set up a new machine, it will be another few more hours of my life.
Yes you really need one with this kind of program. It emulates pencils, pens and brushes much better. Like the pressure sensitive aspect in particular.