It doesn't appear very different from what a lot of folks do at home so I can see why that works for you.............I'm a simple unit and I prefer simple, light and compact solutions. Each to their own and all that but that kit you have there is something I would never hump around without transport support.............After messing about with lots of different ideas I'm now at the point at which I don't believe I could simplify any further without taking an insufferable performance hit............... I'll start by saying that I don't tend to blunt my knives to a significant degree while I'm out even after quite a lot of cutting. I don't know whether that's because of what they are made from or how they are made, or the geometry I put on them, or the fact that I start with a refined edge that isn't disposed to having jaggy teeth that are easily busted over making it weak or whether it is what it is that I'm cutting, I suspect a conspiracy of all those factors. On that, for most weekend trips I don't bother with the below. I just swap tobacco tins to one I have taped a bit of 600 paper to. I have wiped the edge off a knife PDQ, that was a SAK Outrider and I was cutting through rubber I didn't expect to have a cable in. 600 paper is sufficient to put a quick and dirty edge back on enough to keep me going and freeing me to focus on the self inflicted arse kicking for being a dullard. It's also been handy for when I cut up a carpet to use as a blanket when my two mates beat me to the curtains. This route is usually all the insurance I need. I'd need my powder scales to measure the difference between two tobacco tins, one with this addition.....................That said, last Monday I came back from a protracted trip on which I did take a bunch more just because of the large variation in stuff I was doing. I had the same staring point breakdown I need a flat surface, abrasives, and a means of affixing them. Well flat surfaces abound; bottom of a pot, side of another knife, back of a phone if need be, anything. I wont take anything specifically for that. Extend that principle as far as you like, for example if you had skis. Double sided carpet tape sticks the paper to whatever just fine if you use a trailing stroke. Even several bits of paper in different grits with tape ready to go weighs very little indeed and is very compact to transport................Because of the nature of that trip I went full bananas and wanted stuff that could just as easily bring a big convex and a tiny V grind to an acceptable standard with minimal fuss. I introduced two other components, a bit of thin and very dense foam and a strop. The foam bit is plain enough, just use another strip of double sided tape to sandwich it between the paper and the flat surface when doing the convex. The strop is nothing fancy either and isn't even made from leather. I know the knife stunts folks go on about types of leather and whether moo is better than baa, or roo is better than horse and all that prattle about natural silicates. Screw all that. I just want to quickly bring the edge to the point at which we don't even comment on shaving hair 'cos that's minimum standard. I'm more concerned with how cleanly it'll slice through a cigarette paper held twixt finger and thumb, or down a sheet of newspaper without catching and with the noise feedback that tells me I'm in the zone. Compound with do that easily, no leather required, you just need something to hold it. In this case I used a section of some cheap and nasty wide vinyl belt I saw in a preppy shop. It was two layers thick and when I split it down it gave me an excellent hard stropping surface about 1mm thick with just the right amount of compliance. I didn't have my green compound handy so I took one bit with black and one bit with white. All up with the foam, the paper, the two strops and the bits of tape the package was still tiny and under 2oz. It was also well in excess of what was necessary. I just got a buzz out of taking knives from 2 to 10 and out in the sticks putting edges on them that will humiliate a lot of blades fresh from the workshop sold as new.
The knife technique video was quite similar to the Ray Mears vid. But all are very clear, great instructions with some good editing! 
