I enjoyed watching that video - nice shooting Mr Pink!
I can't say I have any special insight on gripping the 43, beyond the obvious of feeling like it needs to be gripped hard. I've worked with mine some, but not a lot. My only real takeaway from the little bit of shooting I've done with it, is a major need for
patience on that trigger. I have to be patient through the entirety of that thick-feeling pressure wall. I feel like I have to give a lot of effort to shoot it well, but that it does have a lot of capability for such a small gun.
Tried my class testing on it a while back (practice environment only though.) First time through I was able to hit the Light Pin threshold, but not quite Turbo. Second attempt I was just barely able to reach the overall Turbo level.
Light Pin level
https://www.youtube.com/watch?v=75d7a8DXhws
Turbo Pin level
https://www.youtube.com/watch?v=NodrRrtW8Gk