During my recurrent, we had a lengthy discussion about icing, and specifically tailplane icing. In a nutshell, the issue with tailplane icing is if too much ice builds up on the tail and causes it to stall, the result will be that the tail will suddenly drop and consequently the nose will pitch up. Without an effective tail, you won't be able to lower the nose.
I wasn't aware of any tailplane stall or icing issues on the Commander, but my instructor thought it was something to be concerned about.
Anyone have any thoughts?