I mix both. I draw best in ballpoint pen on smooth paper. But I can't color worth a sht traditionally because I dont have the patience or the supplies. And I will tell you, if I can buy an entire art program for the same price as like, 5 copic markers, you best believe imma buy the art program. However I'm more dexterous with a pen and paper than a stylus and graphics tablet, so drawing goes by a lot faster if I get the bulk of it done traditionally. So basically, my current procedure is sketch, draw, scan, color:
Garbage example but whatever. Only the base colors were done on this one but you get the idea. Also as cruel as it is, I have serious sensory issues with the feel of paper. Sometimes touching paper makes me gag, so the less time I can spend coloring on paper, the better.