You mean Walker/Brown...
Anyway, the Keys *probably* aren't going to be hit, and by the time Ike gets over Cuba, there's a chance that it might not even restrengthen to major hurricane status before hitting the U.S. We all saw what happened to Gustav after it got into the Gulf; it actually weakened. I guess we'll see what happens with Ike.
What happened to Gustav and what's happening to Ike are completely different. Gustav weakened into the GOM because dry air choked it off. Unlike Ike who's been able to fight against 30 knots of shear and cooler water in the past w/o weakening. The reason it's weakening now is because it's going through an ERWC. There isn't much dry air this time in the Gulf so it COULD explode again once it's out there. Just look at yseterday it went from a Cat. 2 - 4 in just a few hours.
I would be more worried about if that through pulls it north into Flordia before it gets too far west.