We bought one of these stoves, and my only beef with it is cleaning. My partner is the cook in the house and the stove is 'his' domain, so we have been cleaning it with the 'approved' cleaner. He is on-board with natural stuff, but we paid big bucks for this stove, yk? He is paranoid about screwing it up.
But... I'm going to share this thread with him and see if we can find a solution. Thank you for doing all that research, Spastica!