I used the LightCrimp for quite awhile a couple years back. Probably did 5-6 hundred terminations with it. Any issues that we had came back to oporator error on the termination. The standard says .75db loss per connector, and the AMP specs say .6db loss, but we were getting closer to .1 or .2 per connector. I was really happy with the way they worked. Though, we did find the rev2 of the connector was better than rev1 which had matting problems inside. I don't know what rev they are on now, it's been awhile since I've used them.
Justin T. Clausen
Physical Layer Implementation
California State University, Monterey Bay