@CutHighnLetFly; Please forgive me if I seem a little bit confused. I still own neither device, and all that I know about them is just based on what I've read in the forums.
I thought that the Rope Runner also needed to be adjusted for different sizes of rope by also changing out a bollard of one size for a bollard of another size. I was not aware of it being possible to make a change in how the Rope Runner behaves with a particular rope on the fly, without changing out one component for another. If there is some level of adjustability available to the user of the Rope Runner without the need for swapping out a bollard, you are telling me something that I don't think I knew about previously.
One of the big selling points for the Akimbo, whenever it comes to market, is going to be this ability to be adjusted on the fly for different sizes of rope without ever having to remove and replace any components.
My feeling about the way one would use the Bulldog Bone is to get it set up for whatever your chosen climbing line is, possibly put a label on it to be sure it gets matched up correctly every time, and then leave it alone. Quick on and off for short redirects. If you want to climb with two different ropes, buy two Bulldog Bones, and dedicate each device to its chosen rope. I'd hate to run the risk of dropping a bollard out of the tree, thereby rendering the device useless. I'd rather change bollards in a controlled environment, on the ground. I guess it's nice to know that you could do it in the tree in an emergency, but I myself would not want to make a regular habit of it.
Apologies, I just realized that you never said you'd be trying to do the bollard-changing operation while in the tree. It's nice to know that it can be done easily, in any event. It just sounds like an exquisitely designed device.
Tim