There's ... a few issues for "me" using that tool.
#1. Carrying it, getting it out of pocket or backpack, crossbow in my lap, 35' up in a tree, deer all around, retrieving an arrow and grabbing it with the pliers. Lotta, lotta stuff going on there. Crank that you have to use TWICE to cock your Ravin in one pocket, pliers in another? It turns into a tool-a-thon just to get a second shot away...lol I'd need a third or 4th hand to keep everything from falling out of the tree.

😂
#2. With no rail to guide your arrow, getting the arrow through the front picatinny anchor bridge, then up into the trigger box tunnel is enough of a hunt & peck operation even with direct control of the arrow with your fingers. Put a tool between me and the arrow and I'd lose both control and feel. In the semi-dark? Under pressure?
#3. On my R29X, snapping the nock onto the string takes a surprising amount of force; probably 20x that of a Firenock being seated. How's the tool deal with that under field conditions? Cracked arrow if you slip with it?
#4. How about arrows with slickum on them for easy pulling from targets?
Looks like a great tool, great idea for the right guy and the right conditions. Not bad for one shot hunters either. I wear Mechanix gloves every time I hunt, fall, winter and spring. Probably good enough to prevent getting cut to the bone by a plastic vane during an accidental discharge. Likely sting like the devil though...lol
Good thing about this thread is it's motivated me to put on gloves every time I shoot, even sighting in. I have to admit, getting an arrow loaded into my Ravin felt decidedly risky.