I applied the two holsters to my Think Tank Speed belt and gave the "hybrid" combination of Cotton Carrier Holsters and Think Tank Steroid Speed Belt a field test while leading my India photo tour. I also asked one of my tour guests, Peter Fay a well known San Diego based photographer try it out. Peter is a retired engineer.
Shown below is Peter with his Canon MarkII and 70-200 f2.8 lens hanging in the Cotton Carrier Holster, mounted on a Think Tank Steroid Speed Belt, similar to how I used it.
Vicki Athens, a podiatrist and professional photographer from Michigan, was using Andy Cotton's 2-camera set up. Vicki says it's the best camera carrying system she had ever used! Shown below is Vicki with a local Sadhu at Gadisar Lake, near Jaisalmer in Rajasthan.
The Cotton Carrier system is a great way to get the heavy load of camera gear off of your neck and into a position where your cameras are safe, stable and readily available at a moment's notice. The chest harness system that Andy suggests accomplishes all these things. My "aftermarket" application of the Cotton holsters in combination with the Think Tank Steroid Speedbelt worked OK, but I found that the holster, when placed on the Think Tank belt, resulted in my camera hanging too low (Andy had warned me of this, which is why he encouraged me to use the chest harness set up). That being said, I really did like the fact that I had the weight of my camera off of my shoulder and was ready for instant use (quick draw), from my hip. Below, you can ssee Andy's photo of the "second holster" in use and Andy wearing the 2-camera set up.Cotton Carrier website.