I suppose that 're-purposing' a straight razor into a general-use knife should be the least of one's worries, but this guys products do make me shudder.
Eg: CUSTOM HANDMADE KNIFE - J.R. TORREY STRAIGHT RAZOR - eBay (item 110652078061 end time Feb-25-11 19:34:24 PST)

nothing to do with me - price is ridiculously high for what it is.