I've never seen the FX version - just the regular style.
I'm probably preaching to the chorus here, but I'll say it anyway. The Glo-Toob is meant to be a marker light, not a true flashlight. It can be used in place of Cyalume chemical light sticks or Krill lights, and you can dive with them if that's your bag too. The Glo-Toob was tested to 11,500 feet underwater (not by me of course - my tub and toliet aren't that deep!), and rated for 300 feet. And I don't think divers would go much below 300 feet. /ubbthreads/images/graemlins/smile.gif
So you can use them in horrible weather, and not have to worry about them. You can also throw them in the pool for the kids to go after. They're definitely waterproof, not just water resistant. /ubbthreads/images/graemlins/smile.gif