Just saw some pics on Retro City Rampage facebook page hinting at physical copies of the game. I don't have a Vita but I would buy a physical copy for 3DS.
https://m.facebook.com/RetroCityRam...73568154023/890779057630133/?type=1&source=48
https://m.facebook.com/RetroCityRam...73568154023/890779057630133/?type=1&source=48