Hi Guys,
I do not want to come across as "spamming" here - but thought I could shed some light on this topic as I am the CEO of Mattingly Sports and Don's partner. The topic of hitting on one side is one we get all the time and is a logical question. I do not want to clog up this area with a lot of text so here is a link to the answer about durability.
V-Grip durabilityThe bottom line is that the durability being experienced on the field is at least as good as our leading competitors and our warranty returns are below the industry average. We maintain the same warranty as everyone else in the industry which we could not afford to do if our bats did not hold up.
On the second point of being legal, before we launched our business, we spent a lot of time meeting with all of the regulatory agencies including NCAA, NFHS, USSSA, ASA, Little League, Pony, Dixie, Babe Ruth including Cal Ripken, and AABC and have received official confirmation that the V-Grip bats are approved for game play for all games sanctioned by those bodies.
Thanks for your interest in the V-Grip and feel free to let me know if I can provide any more detail and again, I hope this did not come across as spam.
Skip Shaw