A friend of mine shaved off all of his keys' handles, drilled holes in each resulting narrow piece, and then beaded each on a single fat split ring, which works as a common handle perfectly. I believe he has saved about 50% on the weight and bulk of his keys that way. I think you could employ that method with the KeySmart, to compensate for the added weight. Though, their bolts could be too big, so you will need to compensate for that when shaving as well.