FNG, I've always admired double axes. But since I've never used, owned or had a need for one, I'm ignorant of them. It's interesting to learn the 2 bits are sharpened for different uses. Thanks for the info.
I just destroyed a brand new Nicholson mill bastard just the other day while removing some chips from a khukuri blade, so the stone got some use, too. Maybe I'm not the sharpest knife in the drawer, but I just love this system GH sells to dress up the blade edge.
Maybe you have harder files or khukuris are softer, or there are other unknown factors in play here. It could be that you have a knack for sharpening, and that you can do great work with mimimal tools.
My khukuri blades have multiple uses, with the "sweet spot" for chopping and the inner curve for more delicate or things a pocket knife is used for. This may not be your need or experience, but this sharpener is the only gadget (I also have a couple of old stones) I think I'll ever need to buy. It is so simple, efficient, and effective that I'm a bit surprised it's not hugely popular. It follows all the contours of my khukuris and other knives effortlessly.
We all know that very different techniques often work better for people to accomplish the exact same task. It looks like we've both found satisfying methods. This device was invented by a true master knife maker, who has more work than he can handle, doesn't advertise, or tap into computer marketing. When this humble man talks, people who know him listen carefully. If you ever come to VA for knife shows, contact me, and I'll get you guys together. Then again, I don't know you, as you might even have a greater reputation for even better work.
Take good care and be well....Dan
(it seems like the more I learn, the less I know)