Ernest I have been getting into flipping Balisong Knives for a hobby. I carry them for general utility. However, for the purposes of a defensive knive, what specifications would you look for? Blade length/width and handle width. There are a number of plain blade knives with partial serrations. What utility do you see with partial serrations? Lastly, given you extensive experience with knife fighting, what is your opinion about Automatic knives such as Out the Front (OTF) and side opening knives? I suspect that they are not as strong as assisted knives or even Balisongs.