It's easy to get at least 2 *G memberships if you fly SQ F or J class. You simply credit the status miles to PPS and get PPS, while the award miles can be credited to another program (ie, LH) and those award miles also earn status with LH.
Great ego boost, I have to say.
I know for a fact that our friend Gaucho100K is doing it, and he is UA 1K, LH SEN and SQ PPS.