Hi, Bill. Welcome aboard! Love your knives; hope to add one to my "accumulation" (as my wife calls it) someday.

I keep an EZ-Lap model M in my truck console; it can go into a bag if needed. I've been using it for 25 years (less so in the last 10, though), & it'll still get the job done.

I've also picked up several odds & ends like the DMT 2-sided flat hones, & the EZ-Lap versions of what you describe. They all work.

What I've actually got in a day pack & fanny pack that I use a lot are the little Lansky Tri-Angle sharpeners. Essentially, they're about 1/2 of one of the Spyderco 204 Sharpmaker medium stones, with removable rubber endcaps on each end. They're about 4 inches long, & the caps allow good purchase for the fingers while using, if you're very careful. The caps will also give you a consistent starting angle if needed, though the angle may not be the one you really desire--still, it's there if needed, or for those less accustomed to sharpening & holding an angle.

The shafts are grooved on one side (for hook points, etc), and since the're triangular in cross section, will work on serrated blades as well as straight edges. They're cheap enough to have several, though they will break if dropped on a hard surface, like any ceramic stone.

It's been a while since I've used a knife in the field to the point it needed resharpening (used the Model M the last time), but I make it a point to touch up a blade occasionally with one of the Lanskys just to keep in practice.

David