Re: Which daypack to use
I have a J107 Dragonfly as well, and love it, but it is more than I like for a day pack.
I would remommend looking at eberlestocks website. They have models from the tiny mini-me that is about like a fanny size but sits on your back (scabbard attachment optional) to the J34 which is a step down from the Dragonfly. I have a freind with the gunslinger II and Ive been very impressed. Eberlestock also has a wide variety military packs that have a wide mouth scabbard for AR 15's or larger bolt guns with big optics.
I also would recommend the Badlands Superday or Superday II. It doesnt have the totally covered scabbard, but it is a very good pack and very versitile.
I know that these are conventional packs and you may be looking for something a little diffrent, but theses are the packs that my boys and I have found work very well for all situations.