plus 1 for resurrecting a dead thread
I bought an off brand one (looks about identical) in a respectable local supermarket. It claimed 1.5A.. so overspecced (and no there's nothing wrong with overspeccing, devices won't draw more power than they can handle so long as the input voltage is correct).
Like the previous poster's belkin experience, my korean SGS (shw-m110s) saw it as a usb, not ac. I took it apart and shorted the data pins together, took about 5 minutes). Then it recognized as AC and charged a little faster I think, but still at empty (the fastest time to charge normally) it charges about 1% (1.5 mAh) in 2 minutes(.033 hours).. which is just under 500mA charge rate (450 but well within the measurement error and 10% loss seems quite reasonable anyway). Anyway, sure as heck isn't able to draw 1A off of it. The wall charger which is supposedly only 700 mA charges several times faster actually! (which is probably quite safe at low charge levels, but sure seems like alot more than 700mA too me, but I didn't measure it as well).
I suspect this gizmo was never actually meant to output 1.5A (as it's not configured as a quick charger) or if it does, it only does it with large losses, and an internal voltage drop that's too excessive for the SGS to still be capable of actually pulling that much current.
Wish I knew what to buy.