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I love the brush too, but I acknowledge there's a different tool for every occasion- for me, there are some things the pen can do that the brush simply isn't built for. Its good to be conversant with a range of tools, digital included

I use many tools too, and my comic is all digital except for a few sketches. But for analogue inking I only use brush, never tried with a pen actually. But I know it is very common in manga.