My utility bag for the last few months has been

G4Free Deployment Rucksack. The 2 removeable buckles are annnoying but it has the option of using the included strap or slipping it onto a dedicated tool belt.

And I use a water bottle pouch for quick body storage Thinktank

I had suggested a utility pouch similar to the think-tank but with more pockets to ktek's bag maker earlier last year, but unfortunately the one they came up with is...not what I really wanted. Might be useful to you though Ktek Utility Pouch