I've carried a Utility HAK for three weeks now. You must two hand it to open - grab sheath and insert fingers, pull. This is not optimum for a fixed blade in use daily - I forgot from trying to use a PECK as a EDC. The sheath must be tied down or fastened to make it really work - it's how its designed. So, to compare against the Subcom is apples and oranges.
As a cutting tool the angle is fixed and is difficult to get the blade more parallel - I have small fingers and larger hands will tilt the angle even more. This usually leaves just the tip doing the cutting against objects held against a surface. Free hand is just fine, the angle draws material into it like a recurve. Which is what it is designed to do.
I have found small knives just don't easily open even in small hands - The smaller Schrade Cliphanger was just a pain to open, it's larger brother a whiz. That is why so many recommend handling knives at a trusted purchase point locally (who will sell at close to delivered price,) so you can know how it really works for you.