Whoever at Motorrad designed the ignition lock/switch assembly is in league with the lock deicer manufacturers apparently. I figured Sunday into Monday's rain followed by a hard freeze was going to big trouble. And so it was. I had issues with the lock on the way home. Stopped for gas, removed key. When I went to start up again, the key would go in, but not turn. I got it loose, got home, again could not turn key to shut the bike off. Finally splashed hot water on it in desperation. The thing's frozen tight as a tick this morning and lock deicer didn't work, so I took Metro. Not that I was too disappointed to miss out on bragging rights for riding to work in 7 degree temps.
This evening when I get home I will explore ways to gently warm the entire assembly, then apply deicer to get rid of moisture. Seems like a design "feature" BMW could have avoided with a small "flap" in the keyway, like most manufacturers use.