Since openSUSE 12.1 came out I have been running it on my work laptop (continual heavy use) with both / and /home on btrfs. I have had two filesystem crashes, one on / and one on /home. The crash on / left no trace. The one on /home was definitely a case of https://bugzilla.novell.com/show_bug.cgi?id=733843.

Hopefully this will be fixed soon. In neither case did I lose any data. In both cases free space was low on the filesystem at the time of the crash.

I think the snapper tool is absolutely great, particularly the way that it integrates with YaST and zypper.