I've tried it a few times and really don't see how its "quicker" at all, for me anyway. Maybe I'm just clumsy or haven't figured out the easy way yet, but it takes me a lot of effort and time just to put the tape on the feather and not have it hanging over a side. It just always seems like I need at least one other hand. Then you've got to cut the tape and figure out how to peel the backing off all without peeling the whole bit of tape off the feather. By the time I get this all done, my nerves are shot.
Quite frankly, in the amount of time it takes me to do the above, I can have a bead of glue ran down a feather, the feather on the shaft, and the glue dried enough to remove the clamp and start on the next one. And of course I'll still be in a relaxed state, instead of all frustrated and full of anxiety.
Don't get me wrong, I think its a great idea and could possibly be a little quicker after you get a real good hang of it, but it just isn't for me.