Jon Olsson did the first switch misty 900s around the year 2001 or 2002. They've been common since then but it's still a rotation that you don't see too often.
Nowadays a few of the best dudes can do switch double misty 12s and 14s. B-Brown, Goepp-dog and Kai Mahler among them.
Other peeps do switch misty 900s. A switch misty 720 is dope but not done often - Pep Fujas and Colby West both used to drop those back in the day. Switch misty 10s are straight gangster.
Switch misty 540? Don't know if I've seen it. It would look like a cross between a switch flair, and the switch 180 to front flip that Reed Lewis does.