I don't have any experience with them, but this idea has been around for as long as I can remember. My opinion is...it's a gimmick. My limpness test for any of these new ideas, and I have said this before, how many pros are using it on tour. Because those guys are playing for some serious money, and they well, I promise you, use any advantage they can, too gain even the smallest edge, over their competition.

When graphite shafts, or metal headed drivers, or square groves too mention a few technologies first came out, the pro's were all over them, because they worked. By comparison, face forward design, bubble shafts and the like, no play on tour. So since this same length thing as been around awhile now, and is not being used by anybody I know of on tour, my guess, it is just a gimmick.

So keep an eye on the tour, if you see them using some thing, good bet there is a reason. Don't go by a commercial, lots of pro make commercials and don't come anywhere near using it for play. Go by what they actually use, you can go to PGA.com or many other sites and see what's in the bag of different pro's.

Just an addon: If there were any pro golfer using golf 1 equipment, I guaranty they would telling you about it, bragging about it..lol..but there is not.