Once again, intent and context have lead to hard feelings.
Forums are twitchy things, sometimes it's best to use the little smilie things at the left to show intent.
I read the whole thread and I can see the issues from both parties.
In the end, Dana has always been helpful and hopefully will continue to be so.
Johnny I can see your point as well but sometimes when you question somebodies work they get their feelings hurt which can lead to further turmoil.
I would suggest that if you feel the mosfet is not safe having the drain connected to the heatsink tab, that you should buy the one that has no connection to it. That would ease your mind about having the high voltage there.
Dana, although I have not used your circuit (yet

), I thank you and the others with brilliant minds that think up this stuff and continue to share with us solder junkies.
