Sir, I've been able to pick up the occasional copy of the Fairbairn-Sykes fighting knife and find I really like this style of knife. How effective were they in your opinion as a fighting knife? Do you feel a fighting knife is for stabbing and so should have a straight blade, or do you limit your ability to cut with only a straight edge and something like a Kabar, tanto, Bowie, or even a Persian style would be preferred? Secondly, how would you recommend sharpening the straight double edged knife? Try as I might with various methods I can't get a consistent edge along the full length of the blade or at the point. I'm ending up with some areas sharp then not, then sharp again. Thanks!