Had a chance to shoot and watch others shoot a Glock 22 with the Rough Texture Frame. We fired several hundred rounds through the pistol, bare handed and with gloves. The new frame texture seemed to work quite well in keeping the hand in place on the frame, yet easy to shift the grip by releasing grip tension. Noted by all the shooters was the security offered while wearing gloves. Nomex fiber knit, Hatch leather and kevlar, and assorted other types of leather gloves, all found a more secure grip when compared to a current "conventional" grip texture Glock frame. I ran water over my hands and found the new texture offering a very secure grip in spite of the moisture. All of these circumstances were compared to the "conventional" grip texture and the RTF was found to be superior in all cases. The new slide serrations were about 50/50 in opinions as to whether it was an improvement.
Glock 23 is expected to be the next pistol offered in this RTF finish. Others to follow.
I would guess the service life of the texture will depend on what is exposed to the various textured areas. The texture is applied to the sides, including the "thumb rests", the finger grooves and the back strap. I'd expect not all of those areas will be exposed to wear. An obvious candidate would be the lower end of the sides, that are exposed by the holster.
We also fired the 21 and 30, in the SF versions. Probably not a smart move for me, as I can see a new Glock 30 in my immediate future. A ported Glock 18 rounded out the event, with much full auto fun.