I had enough interest in the electromechinical clock that a month ago I ordered a couple of the electronic workings and they are on route to me via a very slow boat from China. Since ordering the stuff, I'm beginning to think a weight driven clock would be more interesting, especially the newer models like SP13 or the very large SP12. I like how you incorporated lessons learned from previous models. Got too many irons in the fire, however, so it looks like long-term running of the SP8 will be the only clock project for now. I think I can obtain a min per week accuracy (almost that now) and I think that's pretty good.
I wasn't aware PrusaSlicer had a split function like that as I've been using Cura for a long time.