Hey Sock,
We're in the city here, so I go a lot of tight places where a pistol is so much better. I hate the back alleys.
The two knives weigh very little because they are Titanium, do it's worth it. I use the folder for my quick utility, and the dive knife I also use as a pry bar for pulling boards up from floors and such.
Rescue cuter is the Benchmade 7 hook, and it's issued. crimpers are also titanium, so negligible weight. For an immediate action situation, where I need to cut wires...NOW! I cant afford the time for opening a multi tool, the absolute best for me to work with are the wire cutters.
I've got a heat sheet in there, not much more room for another. I agree, those SAS guys got really caught out in the weather, and that more than anything took them down. My AO is mostly urban and suburb, so I look more at water, and rescue.

Cheers