I had it on two systems. Some peripherals stopped working after an update on one system and the attempt to downgrade it to the LTS (Leap?) failed miserably --> Ubuntu. On another one the graphics card stopped working and somehow forced it to the LTS with a custom kernel. That worked until trying to upgrade it by two minor releases (X.2 to X.4? Can't remember if it was 13.Y 14.Y or 15.Y). There were so many conflicts and messing around with the source lists (or whatever they're called)...

It was the most difficult system to update that I've ever had. YaST is great though. Best GUI for system configuration I've had so far.