How long did it take you to learn H perm? U perms? T and J(b) perm? 10 minutes maybe. And that was back when you learned and executed slowly. Fast forward to now. You do the alg 15-20 times and it's in your fingers. ZBLL has some easy mirroring if you're good with your left hand so it wasn't more like 42 algs. 42 algs in 5 hours is not a big deal if you don't mind not remembering what case they go with.
EDIT: I'm finding the quoting of the new forum more confusing than the old one...