Here's another couple questions for you, invictus.
1) You want to train with an actual knife? Bad, bad plan. Bad.
2) What are you and this buddy of yours training in? Are you training with somebody? Or are you two just running around the backyard jabbing at each other with Cold Steel Spikes? If you are training with someone who teaches an actual martial art involving knives, that person will tell you which style of knife is used in that martial art. Again, there is no such thing as an "across-the-board/all-styles" martial arts knife.
