Thanks to the generally positive comments on this systems. I have contacted my local source and he states they are in the process of re-designed the area where the straps go through the plate. Apparenty they have had reports of failures on the plastic units. He said I could purchase from his remaining stock and upgrade it later when the new ones appear (or even trade them in for the Carbon units plus extra $$$). So, I went for it.
Went ahead and installed them on my two trap belts...but found the one Gul "Nappy" style belt has a stainless spreader bar sewn in at the lower strap. Will either need to cut & re-stitch or switch to a different belt to get the keyhole unit on there.

Mike.