I found it super easy to clean them off with a rough cotton rag and some thinner/pre-prep spray. And if you wait like 2 minutes after your done, it's not brick hard, and its not sloppy still either, take another scraper and just knock it right off, then use the thinner for excess. Takes like 5 seconds the whole process.
If you wait too long and its brick hard, it's not that easy to clean off, but it's still not bad. The material those scrapers are made of the mud doesn't soak in so they are to clean.
And yeah, good progress there man, you will be sanding and sanding, then more mud, then more sanding. We will see you in a month lol.
