HA! Beat you to it! Mine arrived today.... Got a deal that I just could not pass up.It's a good question. I'm thinking about investing in a SP MK25 S600.
My guess would be cold water wouldn't make a difference as the concept is to get the salt water out. But I'll wait to hear the correct decision.
Now anxiously awaiting the response myself. 'Course, the bulk of my diving is beach diving in my side yard so JC's bag trick is going to be easier for me to implement. (& maybe more important also)