I've used Talon grips in the past, and I've found them adequate. I was looking at Goon Tape, but in the event of an interaction with LEOs I wasn't sure how they'd perceive a pistol's grip wrapped in tape.
I think TFB TV on the FBI tests of that era, and the Glock's reliability issues were from the slide not locking to the rear on an empty mag. That could have been user error, but it was counted as a failure point.