They'll probably be a worse quality but there shouldn't be any real difference. I'm not on patreon so I don't know the second one. On Android it can be spotty but you should be able to update with no problems. With Windows you should be able to make a copy and use your save file. If you paid $18.50 when you first paid for the game you're fine. But if you've already paid $13.50 then you'll need to pay another $18.50 based on how itch works. (Whenever you say something where there's different prices paying for the larger priced thing will give you access to the lower priced thing, unless marked as separate)