What I wish ITS would do is reconfigure the now 'extinct' ITS Discreet Messenger Bag into backpack form. Take the Goruck shoulder pad design and add it into the mix. It could be an amazing combination for an EDC backpack!
With that 'wish' said, I want to throw in my two cents on Goruck bags. I own a GR1, SK26, Radio Ruck, and now a GR0. For perspective I'm 6'0' and weigh 240--I'm solid, not fat.
I've traveled the world with the GR1 and only have only two big complaints: 1) I wish there was a simple way to attach a bottle of water to the thing--maybe a side pocket that flattens when not used, 2) it sticks out too far when you put it under the airplane seat in front of you! I've actually sat in exit seats and had the flight attendant insist that I put it all the way under the seat. It doesn't fit straight without hanging out a bit. That's what you get with the 20" length of the GR1.
Here's the funny thing, I like the GR0 much more than the GR1. I have a long torso, but it hangs down my back where I want it, just not to the top of my pants like the GR1. The dimensions of the GR0 make it just about an inch longer than my Tumi Alpha Bravo pack. That pack was too short.
Anyway, what I want to say is that Goruck says for 6' and above, get a GR1 and for UNDER 6' get a GR0. At 6'0" I find the GR0 less obvious and easy to travel with. Just my perspective--that and $3 gets you a questionable cup of Starbucks!