I can't tolerate Substance painter. Struggle with it for years and never felt homy in it. Once you accustomed to nodes you can't really go back to layers. Besides there are much better brush systems around than what Painter offers. I can't do a nice "roll" brush in Painter for examle Zbrush or Corel Painter can. Or do auto cavities masking zbrush can on the fly with pressure involved like a real world brush, without wasting your time on complicated masks tweaking that always look sort of robotic vs what simple human touch could do just by your own hand intuition. Or Rebelle brushes with true looking flows and streaks way ahead of SPainter or Corel Painter ones .
But even using Substance Painter as a mask painter it would be so much more convenient to just copy/ paste masks to Designer and assemble and tweak evrything procedural there instead of non stop puzzles with sbsar exports.
Mari with its cool nodes is a bit out of my price range and has its own weird quirks. Still I would be perfectly happy if Designer just allows us to paste svg or bitmap with auto corresponding node creating from any other software. Svg node sort of allows to paste from Inkscape somehow but the scale and crop is all wrong. Doing it through save/open dialogs is too annoying.
Could you do working paste from Photoshop please. Both svg and bitmap. Would be a reason to stay subscribed for it. I am sometimes not sure why I still do. And paste from Blender please . It has best copy /paste options inside its image editing pane. Just borrow the code from Blender.