Love the post, I am also a practitioner of PTK, as well as JKD and Wing Chun, I have been training for about 12 years.

I agree whole-heartedly with your attitude toward simplicity, performing a 6 hit combo in class looks cool, but in the heat of the moment can be impractical.

We have to remember however, that complexity is the road toward simplicity, if you can perform a 5-point sumbrada with efficiency, then doing a simple roofblock becomes much easier, remember it is about training Principles, and Attributes, with these anything will work, without them nothing will.

Also, FMA has branch of the arts known as Kino-Mutai, the art of uninterrupted biting and eye-gouging, with pinching thrown in for good measure, and is used to quickly get an opponent off of you should you go to the ground, in this case your teeth become your weapon, where a knife on the ground may be less practical.

Great post, im going to follow you i hope to see you make more posts about you martial arts studies in the future, happy training!