I have no knowledge of Fisher, but I'm guessing he'd be a much better #7 option the Ian Henderson. Hendo is a 9, if Fisher isn't a half option at all then he should definitely be bench hooker option. Hendo in 13 is interesting because he's a good defender and makes a lot of tackles but as he isn't big he is palmed off too frequently for a lock role. .
What happened to Mark Calderwood, I heard he was playing for Scotland and now England?
I reckon if they've got a big/good enough forward pack then I like Scotland's chances and think they may play a lot better than people are expecting.