If you want to keep it Blenderish then you may want to try Armor Paint which is built off of Blender and is a PBR paint tool. It’s around $20 USD or you can download and compile it for free. By default(If I remember correctly) it uses Industry Compatible keymap. You can goto preferences and change it to Blender keymap. It is still considered Alpha testing. This cost also includes Armor Lab(So I’ve been told) which is similiar to Substance Designer from what I understand. So that might be a better option since you’ve spent so much time learning Blender.
