The LED's should last alot longer than that. The problem is going to be the switch-mode power supply. I'd hold off on these things until their price drops a bit, and until we have an idea how long the PS will last. Has anyone done a teardown on these yet?
The CFL's I've bought from Costco are lasting less than a year for me, so I'm reluctant to start using them until they have the bugs worked out.