Buy a gun to enjoy it do what ever you want to it. just always assume any paint job will lose by value.This is the key thing, the quality of the paint job isnt the issue.
For example i quite like the sigs, and that rifle in its original colours, maybe olive furniture, would be quite nice to me.
But that paint job, again, to me, is just something that would need stripped before i'd want to use it.
I suppose we're all guilty of it to some degree, i know i have guns that are very niche.