I’m quite confident you’d be able to do what you want with linux soft.
So far, I only used gimp or krita where sade was using photoshop for instance and it worked okay so… well, as far as I understand the developer pack (once again, I didn’t try my luck there but still), there’s no big trouble I can foresee on your end.
If something arises, it should be on LBandy’s side
Or maybe I’m completely confused, I’m just a bystander here… 😉