Last year I used a Sea to Summit pack cover (size medium, 3.6 oz) for my Gregory Z55 pack. This year I am contemplating dropping the pack cover entirely, but I do not relish the thought of getting my backpack soaked. I'm fully aware of the pack liner option, but I find this rather cumbersome and redundant given the fact that my important gear (down bag and clothes) are already in waterproof stuff sacks. What really concerns me is a soggy pack with excess water weight. Also, if you have stuff hanging off your pack or in the quick stash pocket, then no pack liner will protect it.
I'm curious to hear others' thoughts on this matter, particularly how those relying on a pack liner deal with the outside getting soggy.

