Random baseless speculation: go!
Me, I got money on that dagger being completely sweet. I say they ought take a 6.5" blade (think slightly longer than an ESEE RC6 but the same handle, spearpoint blade, no choil) with the bottle opener and wire thing from the HEST then sharpen the swedge about 3/4 of the way back, not completely, so as to maintain the function of the bottle opener and the end-user's ability to choke up on the blade.