Think Tank Urban Diguise
I have both the 50 and 60 MkII. I bought the 50 and liked it so much when the new 60 came out I picked that up. Beautifully made bags and I have the backpack strap to go with it. The strap is good enough to hold
body,100,28-135,18-55,300,1.4x,some crap and a Bogen 055.
I think I have had it up in the mid twenties for weight and the strap does not dig, the regular strap is very nice to but best not carrying a full load.
With either bag I can carry a 40D with the 300 mounted, tight fit but doable.
2000 740i-Annalisa and 2008 335i-Weebl. Weebl may wobble but has DTC
2012 X5d in Sparkling Bronze ( The Ultimate Cat Carrying Machine)