I find the whole thing strange I have carried a knife for over 20 years... but I tend to cut myself on nails, glass and sharp stones. my FAK kit of choice is a role of insulating tape. yesterday I cut my finger quite badly on a slate roofing tile and a plumbers ptfe tape came to the rescue as a bandage. funny though I teach first aid LOL
Maybe a mix of tradition and aesthetics for me but I don't want a lumpy FAK making my sheath unwieldy. Put it in a possibles pouch or your bag. I can see the point but personally wont go down the route.
Agree with that view young man, FAK on a sheath is the sort of thing some 'elf n safety' type would demand.
Don't think you could make a fak small enough to be of much use. Once you get enough stuff in it to be useful it just gets too big especially in colder weather when you want your shirt or coat to cover it and you.