BF2S Forums Unlock SF weapons on friends SF, then use them on my BF2?

Can I unlock SF weapons on my friend's BF2:SF game and then play with them when I come home on my BF2 game? I also read something about getting double unlocks when using SF. Will I get any new unlocks if I play on my friend's BF2:SF game?

Would be happy if I recieved any answers. I searched first but only found other people asking similar questions but no answers.