HYPERION EOS0610I 250W 6S 10A Questions

http://www.allerc.com/product_info.p...oducts_id=3366

I'm pretty sure that getting that charger. It can charge up to 6 cells so if I got 2 2S packs could I charge 2 5000 2S packs at once? I know I would need an adapter and maybe an adapter for the balance plug(s).. And before how would I charge 2 6 cell Ener-G 4600 packs at once as one pack. Would it be better to charge it as a 12 cell pack or as a 7.2 volt 9200 pack?