Check out this demo video about the Ka-Bar TDI knives, a good backup option if your main weapon (and strong hand) are disabled. The timed demos are pretty cool to watch, i.e. the slowest person with a TDI knife is faster than the fastest person with a folding knife.
After exchanging some messages with resident expert “The Maj”, I decided to pick up one of these knives and should receive it in a couple days. For around $50 with shipping, it’s not a bad deal. Just another tool in the tool kit which can be worn every day in conjunction with spare mags on the offhand side.
Info on the knife can be found here.
I bought mine off of Amazon here.
I will report back after I’ve worn it daily for a few months.
***Update 8/28/15***
I received the knife yesterday and it looks great, clips on easily enough and I barely feel it wearing on the weak-hand side just behind spare mag pouches. Will add this to my EDC and see how it goes!