Here are two of my newest chavetas. I designed these myself, but are largely modeled from traditional cigar knives.
http://wholeleaftobacco.com/Professional-Stainless-Steel-Chaveta-Cigar-knife-4-Chvt4.htm
http://wholeleaftobacco.com/Professional-Stainless-Steel-Chaveta-Cigar-knife-4-Chvt4.htm