Thanks for your detailed answer, John!
I agree with you, I don't mind (and did not think about it ) the hand question when I draw on paper (I'm just scary to fold or stain the paper... I'm not always being cautious).

I thought it would be more like "normal" drawing with a Cintiq. I wasn't sure about it, we all have questions about techs we never try, I guess.
And yup, the combination of tools/softwares/hardware/OS is always a complex one, subject to conflicts and problems... But I prefer it to something all one-company dependant somehow.
I've less problem with Krita under Linux Mint (my day-to-day work station) than using Krita under WIndows, which makes senses because it was developed for Linux.
AND I'm actually very surprised that I didn't encountered any problem with my tablet so far...

Anyway, thanks again for those details.
Oh, and I love drawing on paper, but I would have the problem of lettering added to the color one. Plus, I love the symmetry tool lately...