Same here - - very satisfied with the Sensus, since it had a significantly larger memory than what my Suunto dive computer offered (something like 100 hours vs 30), plus it was actually cheaper too.
Since this is AFAIC a better product, I don't particularly care that Suunto's not interested in supporting the Mac.
BTW, Les Wilk has just announced a 'supercede' to the Sensus Pro -- the Sensus Ultra. His webpage is claiming 2000 hours @ 10sec sampling intervals (yes, also faster than the Suunto's), and I've asked him offline if this is a typographical error...I suspect that it might be "merely" (!) 200 hours @ 10sec.
http://reefnet.ca/products/sensus/
EDIT: Update - its not a typo!
I've just had an offline chat with Kris Wilk - - turns out that what I thought was a typographical error isn't an error afterall. Wow.
Their specifications still aren't 100.00% final, but the memory runtime is expected to be close to TWO THOUSAND (2,000) hours at 10sec interval, which would also be able to be 200 hours @ 1sec sampling.
-hh