Esp..
Bearing in mind the closest I've got to having one is having the invoice for it...
To date, I've managed to get by with my #5 with an agressive radius honed into it, kept the frog so far back as the tip of the blade is at rest on the rear of the throat. It works to a point, but the pair of oak boards on the bench right now have it well beat; I'll get part way through a stroke before hitting either a knot or a band of reversed grain. At that point, the plane takes off on a latteral vector trying to contour the wild stuff. With my leg in the condition it's in, that change in vector brings tears to the eyes and turns the air rather blue..
The L-N 40 1/2 has neither frog, adjuster nor chip breaker; as far as scrubbing's concerned, they're redundant. The blade is sharpened on a 3" radius, is masssivly thick at 3/16" and A2 steel, so hopefully it has the mass and stiffness to plough through the wilder stuff...
More than that I can't say till I get it in the shop and let it do its thing....