Most of the DM's know how to spot them from the surface. But, it's a little scary to swim away from the wall and over the deep to escape one. Never been my experience, but I'm aware of how to do it. Swimming around sand tornadoes is a little weird though.
I have two Rolexes, neither is a dive watch. Unless I had hundreds of millions of dollars, I would feel like crap if I lost a Rolex on a dive.
My current dive watch is a Luminox. It keeps better time than an automatic watch, as any quartz watch would.
I'm looking to go to St. Croix in October. I haven't chosen a place to stay, yet. I did notice that a couple of dive ops include rental gear in their price. I only need tanks and weights. I prefer mainly boat dives, but want to do a couple of dives (at least) at the pier. What shop is the best...