The last of the scabbing came off this morning, so now it's just a really ugly scar that probably won't ever fully vanish. Still some swelling and a lot of joint stiffness. Now that I'm reasonably sure I won't pull it open, I can go on to more aggressive flexing of the knuckle to get more range of motion. I can mostly close the hand, but not really make a fist. I have enough grip to hold a jar firmly, but not tightly if the lid is stuck. I can grip enough to use a manual can opener, but I would not be comfortable yet trying to use something like a chainsaw or post hole digger clamshell. I can flex the wrist full range, but don't have any strength as needed to support myself getting out of a chair for example.
Weird how the stiffness and weakness from the lack of motion due to the restriction of the cast/splint is almost taking longer to recover from than the wound itself.