Like many others on this forum, I EDC stuff that is used daily and would also be in a PSK. I guess you could say I carry two PSKs: the stuff in my Mission Wallet and my Ritter PSK. The knife and light in the Mission Wallet are used daily; other stuff in the MW not so much. The DR PSK is never opened. As for an FAK, I went with an Ultralight .3 and added a set of tweezers. Works for me.

I carry them separate only because that is what works for me.

I use my Fatboy daily as my "man purse" so I have a little more room to play with.

In my Fatboy, I have my PSK and a small FAK, in addition to my little red "bag of tricks" (tape, backup matches, twist ties, etc.) for minor emergencies/improvisation.

Having them separate allows me to carry more stuff and be a little more flexible in it's use (for example; I can hand over my FAK to my wife and still have the rest of my gear).

It's fun to play with different configurations of stuff and see how it carries/works/doesn't work depending on real life experience.

My only advice is to stay flexible, play with what works for you, and have a backup for your backup.

One never really solve problems; just trade off consequences.

For smaller kits, I like to have them seperate. In my PSK/PMK combo, the medical kit is as big as the PSK! Why? Because you can die from blood loss just as fast and easy as hypothermia, and from an infected wound well as you can from dehydration.

At the next step up, my ditch kit's medical component is just as large as the "core" part of the survival kit. Never mind that I've got about twice as much "accessory" stuff as there is core kit.

To a certain extent, I like combining some PSK/FAK items. In my med/large PSK (an Otterbox 1000) I had enough room for 3 triple antibiotic packets, 2 alcohal wipes, 2 2x2 gauze pads, 4 bandaids, and 10 steri strips. The idea being that if I were to suffer a large gash from a fall or something I could patch myself up if all I had my my PSK. I could also use the 26" of duct tape in the kit, and my EDC cotton bandanna for additional wound dressing. But again, those supplies are in there just in case all I had was my PSK. Additionally, I carry the AMK Ultralight .9 in my pack, so I can deal with just about any medical emergency I encounter.

Sometimes, when I am going a little lighter, I do like to break up my PSK and FAK. I have found the Otterbox a tad too uncomfortable (hard, and 12.3 oz) to sit in my pocket all day, though I have managed that before. So like many others, I break my supplies up and carry the Ritter PSP in one pocket, and my personally assembled FAK that I call my Ultralight ".4" - it is about halfway between the .3 and .5. This way I can carry more medical stuff, though slightly less "survival" stuff, than what is in my Otterbox in a more comfortable setup. I love my Otterbox and AMK .9 but sometimes they are awkward to carry on person and thus I usually toss them in my pack, but the nature of my environment (urban at the moment) makes a pack feel like overkill. Can't wait to go hiking...

Matt