I sometimes do A-20 and P-47 skins but I am not working on any currently. I do have a few P-47s and a Boston skin in the batch that is to be released to the game shortly.
The P-47s are all current generation AH2 skins but the A-20 is an old AH1 skin. Like most AH1 skins it is difficult to work on, with lots of texture patches and stretched areas. Also at some point in the next few years it will probably be replaced by an AH2 skin which would obsolete any existing skins done for it.