I've been thinking about knives a lot recently and I have several fixed blades which I use for gralloching deer that I'm sure would come through in a 'tactical' clutch.
My everyday folder is a Griptilian which seems to work & carry OK - although it's taking a little getting used to as my previous folder carried 'tip down' and I find myself unable to re-clip speedily
I recently bought a Cold Steel SRK in Carbon V on Ebay that came with a great aftermarket heavy Kydex sheath that was to be my 'tactical' fixed blade but I discovered that it was 1/2" too long to keep the TX State Fuzz happy - the legal limit here being 5.5".
I was, and still could be, thinking about replacing it with an Ontario Afghan or RAT5, maybe a Seal Pup to carry until TEOTWAWKI, when I assume all rules will be 'off', but I read Michael Janich's comments on the first page of this thread where he wrote about shortening a blade. This had not occurred to me until now, to whom would one entrust a job like that to ensure retention of edge and temper?