A bit late, but...
I bought the Casio Triple Sensor watch, the first one that came out, and unless they've changed it substantially, I wouldn't recommend it, mainly because the plastic they used for the case is very brittle, and one of the posts that hold the wrist pins just fractured. For some reason, they used a very different material than the one they use in their G-Shock, which is just about invulnerable. This cheap plastic is the same used in their databank watches, and I've had one of those just disintegrate on me-
Other than that though, it works well for the altimeter and magnetic bearing compass functions. The thermometer is pretty much useless unless you take it off and let it sit away from your wrist for a while, because it picks up your body heat while you wear it.