
Getting to know it.
Takes a good edge.
That was one of the pros about the old shell handle boys knives. The used the same blade stock and received the same heat treat and edge geometry as the more expensive pin (and in the case of Schrade Swindon Key, as applicable) construction knives. Those old Imperial Barlows have the same blade as the more expensive Schrade, Camillus, and Ulster/Ulster Old Timer/Old Timer Barlows, and will take and hold the same keen edge as the more expensive knives.
Got a new sharpener and still practicing how to use it . It appears that I have been hand sharpening for years at approx. 17 degrees and they designed this sharpener for a minimum fo 20 degrees , but it will do 17 degrees if you are careful .
Harry
Years of muscle memory is ..."difficult" ... to overcome ... isn't it?

I was taught to sharpen at 10 degrees per side, starting at age 5. After 61 years of sharpening freehand, I found a guided rod sharpener on the "big river" site that has a 10° slot.
I was ±2 degrees on all the knives I had thinned and reset the edge to 10° per side on freehand, when I checked the angle using the guided rod sharpener.
20 degrees per side?!? That's 40 degrees inclusive. Not very "sharp" with such an obtuse angle. Since you've been sharpening to a more acute 34 degrees inclusive freehand and are used to using that edge, at 40 degrees inclusive it may seem/feel a little duller, and the working edge won't last as long as what you're used to, either.
(I was taught a 30° to 32° inclusive edge was what you wanted on your axe/hatchet/tomahawk by my dad, uncles, grand fathers, maternal great grand father, and great grand father's mum-in-law, my great-great grandma Potter. They also agreed a knife (and a home/kitchen cleaver) should be at 10 degrees per side, give or take 2 ~ 2 Anna Half degrees.)
I'd never heard of a "micro bevel" before coming to Blade Forums.
I still don't use one. After all the time and work thinning the edge, getting the edge to an acute 10° per side/20° inclusive edge, why on Jupiter or Pluto - let alone Earth - would I want to dull it with a more obtuse (AKA: "dull") micro bevel?!?