+1
I did not read the other posts, but seriously, why share a blade? I wouldn't want my father's blood to mingle with my own.
Agree. I was puzzled when people suggested blade-sharing.. Imho, there is no such thing as a "broken-in blade". It's only that it's gotten duller. So don't start with the sharpest of blades. Get him up and going with a blue-tip/SS loaded with a Derby or RP.