Default G2 Tethering to a Galaxy S tablet?

So i really want a Galaxy Tablet..but i'm not too excited paying 399 and signing up for a 2 year contract with tmobile. So i would much rather buy it outright for 599. Question is...is it at all possible to tether my G2 to that Tablet via 3 party App? Would PDAnet work? Is there an app out there i can stream the G2 as a Wifi app and pick up on the tablet?