Andy: you are correct, i carry most of that on my person, but I do have aquamira tablets included in my filter weight. I also have a small role of duck tape and a second fire starter included in my first aid/ toiletry kit.
Eugene: lol, I meant removing one or the other, actually the wisp, but after some reading, I think I'd be better off with both of them. Just added a pack list right now, but I will usually wear lightweight nylon shorts or rei saharas depending on the temperature. I almost always hike in a short sleeve moisture wicking type shirt as long as its above freezing, I am a very hot natured person. So the wisp and down inner are my only cold weather layers(add a capilene base in winter). Usually have on my New Balance mt101's and a OR radar pocket cap. I usually only carry one regular size gatorade bottle, or sometimes the bigger powerade bottle. Never had a problem with carrying one bottle, plenty of water here in the southeast. Water sources are generally a couple miles apart, if not closer. I also have a 2L platypus with my filter setup. I can always fill it up and drop a couple of tablets in to purify it while in on the move.