If you're talking these...
Buy Ahead Drumsticks online at Musician's Friend
or the sig versions, yea I've used them, bought jordisons pair...yea, they lasted a long time I'm not gonna lie. But, the metal(whatever kind it is) that's used as the inside cracked lol, seriously it split in half :S , granted that was 3-4 years after I got them but yea they aren't indestructible. And for those, you sortof have to play differently than you do with wood sticks cause they're balanced different, harder tips...harder stick in general and you can easily damage your equipment with them which sucks.