Maybe they think that a running catch dog does not catch as hard as a regular catch dog.
Waylon
That is exactly my thought. I have never seen a running catch dog that was caught the way that I want. Every one of them has done just as much mauling or re-gripping as it did catching. A lot of what I have seen called a running catch dog I would consider nothing more than a gritty bay dog. Certainly not one that I would want to trust to hold on till the end.
I'm sure that there are exceptions but that is my .02
Steve