I have a VPI Scoutmaster and have used VPI's stock clamp and their upgraded clamp. I now use a TT Weight clamp, which is my preference. Ease of use and retreval of detail both much improved. Service from TT Weights is top notch also. Give Larry a call at TT a call or e-mail, he's a really good guy.
Here is a link:
http://www.ttweights.com/catalog/item/6997332/7020315.htm
Here is a link:
http://www.ttweights.com/catalog/item/6997332/7020315.htm