There’s also the fact that the tool is 90 degrees but corners rarely are.
also you have the feather the edges in after still, just like you would with a single edge tool. it’s not gonna get rid of that unless you’re really good
See, that’s the part I was expecting the corner tool to make easier. If I’ve got to feather the edge with a normal knife anyway, I might as well just use the normal one for the whole thing.
that’s what changing the angle compensates for
but then you have a sharp internal corner
if that works for you, then yeah no point using this