Just to let you all know, for those that sharpen their own chisels and plane cutters, there is a seller with the best leather there is for this purpose which is "horse butt" (as I have read), on ebay and on with their own website. I ordered one for my DP wheel (almost done making that) and will use another piece for hand stropping. Supposedly this is very thin leather (5/64 to 5.5/64) that is extremely tough, these pieces are "vegetable tanned" (veggy oil?). It is a nice large whole piece, not diced-up. He emailed me back in reply and said they have thousands of whole ones. I read in a forum that if used correctly one piece will last a lifetime.
Alex