I have a Lowpro 1 Lens case, but the 100-300 with tubes doesn't quite fit. Think Tank's Lens Changer 25 is also too short and the 35 is tall enough but too fat. I'm looking for a case that is 3 - 3.5 inches (d) x 7.5 - 8 inches (h) (inner dimensions) that has a draw strip top or quick release buckle on the top and can be mounted on a closed loop on the side of a bag (think MOLLE/PAS). I don't want just a zipper top because it takes me too long to swap lenses in the field and secure the zipper. I don't want just a belt loop because that is very hard to secure on the side of my bag. I don't need to fit the lens hood. My Google skills have failed me. You are my only hope.