Wire wheels present a more aggressive drag against the motor - which isn't good for potential overheating, but that's no excuse for a switch to burn out, surely?
A tip I picked up, here or on Farcebook, was to use an MDF wheel for honing and polishing. Yesterday I gave it a go.
I got an MDF window sill off-cut and cut a 6" disk. Put it on the lathe to get it round and was going to put it on the grinder. Yet, as I don't have a 13mm drill bit I turned a mortise into the side of the disk for a chuck to lock in there.
After that, I mounted it on the chuck and applied a liberal coat of Autosol Solvol Chrome Polish and tried running the blades across it. WOW!! They come up well. All the lines from grinding disappear and they look amazing with a mirror finish.
That was last night. Not had chance to test them with any wood yet, but I'm looking forward to giving them a go.
I too am also thinking about a Creusen slow speed grinder. I've tried a friend's one with a CBN wheel. It's really good not having to worry about the edges going blue.