So I FINALLY tried it out tonight.
I noticed some of the same things that
@JackHammer mentioned already, though it was getting time to tuck my youngest 2 into bed, and, well, priorities, people. Didn't get more than a few minutes before it was time to switch gears.
Number one thing, as already mentioned, everything starts above and left of where your finger is. Branches, foliage, all of it
Number two: the auto-tapering action when drawing branches needs a control to manually adjust the extremity of taper.
It seems like there's a function for increasing girth the longer you hold your finger down, or the slower you go; or did I just imagine that amidst the rugrat distractions? If it's a thing, a manual control would still be nice. If it's not a thing and just in my head, it could be a thing.
I need to get some pics of other trees when the snow is off them, and really put it through it's paces. So far, though, I absolutely love the usefulness of this. I foresee many a wasted hour in my future.