How much weight does it add? Trade-off for the efficiency I imagine? With the setup you have, it is about 10 oz IIRC.
http://www.backpackinglight.com/cgi-...l#.URqWdeOe-Do
Guess we are in agreement, though: : Best for multi-meal resupply and boils (~8-10) and solo.
The lack of versatility (it is a system after all) and price were always negatives for me as well. But that's my own personal preference.