Just a quick FYI, Sawyer sells an inline adapter for the squeeze filter (no need to buy an inline specific filter). This means you can add the squeeze filter to the hydration line of your current bladder. But you can quickly remove it and use it to filter water out of the bags.
This year I'm going to run the Sawyer Squeeze only, I ordered up the inline adapter kit ($5.99) and 3 extra 2L bags ($10.99). I haven't received the extra bags but I do not see this entire system weighing much but with the included bags that came with the filter and the extra bags that will give me 9.5L of water storage in the Sawyer bags plus my 2L source water bladder on top of it all.
Now this may seem like overkill but when I'm up at the treeline and there is no water I can make one trip down for water or on the trip up if I want to carry the extra weight and not have to go back for extra water for 3 days because I have the ability to carry 11.5L of water now. I'm going to guess that the bags weigh what 1-2oz (be great if someone had a scale and could weight each bag). If one bag fails no big deal because I still have plenty.
I also like the abilty to filter water into my source or not but yet still have the ability to add the Squeeze filter onto it. Hopefully this will help some save some cash and not have to buy two seperate filters. Once I receive the adapter kit for the filter I'll post up some pics.