Funny you mentioned this, because I was just thinking about this the other day. I only have a Seiko 5 and a titanium Samurai, but I wouldnt dream of diving with them on...well maybe the 5 but I would be gutted if I lost the Samurai so that would be a no.
I just ordered a Suunto D4 dive computer which will accompany me on all my future dives (I only recently got into diving, loving it so far).
I can confirm that being affected with this new madness as well as the diving bug, Ive gone slightly crazy for dive watches :drunken: