As much as I'd understand being offended talking about it from s.o. else I think Ts ahould be prepared to discuss the topic of their mortality with their clients. Like it or not (I don't) it's stg that would influence us a great deal. I too have discuss the possibility of my T dying on me- who would contact me, what would happen with his notes...
Maybe it's easier for the "younger" ones- my T just turned 50- but it's even more valid for the "older" ones...