I own two Kifaru frames and multiple bags. And a seek outside peregrine kit.  
I just received the SO kit a month and a half ago.  I’ve got several scouting trips in it so far.  Heavy for daypack load too. Bino’s, 65mm spotter, tripod, all my hunting day carry stuff like FA kit.  And a little box of fire starter, rope,  head lamp, etc….  3 liters of water, extra clothes, And a full nalgene.  Probably 20-22 pounds.  Covered a lot of miles so far.  Going again this weekend.  This is a great pack man.  I love it. 
When I set my Kifaru tactical frame up for backpacking trips   I use either a 44 mag or a DT2 bag for those trips.  I prefer the DT2.  Gonna sell the 44 mag soon. I personally lije the DT bag layouts so much.  
When I use the tactical frame for hunting it wears a DT3 bag or a custom bag I bought off of pods8.  I like them both. A lot.  
I have run the light frame while hunting too.  Same bags as on the tactical.  I’m in between the long and short shoulder straps with an 18” torso.  So, I can’t get this frame fitted the way the tactical does. I’m probably going to sell it too. It’s a great frame.  But, the tactical is by and far my preferred choice.  Even over the SO peregrine. 
I’m going to get rid of a few things as I just don’t need all the frames.  And, no matter how many times I buy a bag with the layout of the mag series, I always sell them.  They are great bags.  But, you just can’t beat the DT line.  Simple but effective.