Haha

Glad I have been an inspiration for once.
When you said experimentation mode I thought there was an "experimental features" check box like in the blender betas and searched for a minute before realizing you simply were in herbert-experimental-mode
I have had some more aha!-moments regarding a few tools and by ctrl/alt/shift clicking every icon I could find.
some negative experiences too. 2 crashes to desktop, one with a heavy file but one time also while working on a small test image with just 2 layers and 1 layermask. So how stable is it in your experience. Are these just bugs due to version update? And is there a crashlog being created?
I've also had some issues with cursor smearing when I was not working on the top layer. (I've already sent this reproducable one to support
https://skirse.de/cloud/index.php/s/JSATEAcDneTtsjX, but it occurs in other cases too that don't involve liquify adjustment, weird pixel traces on bitmap layers for example)
Recently I got really bad graphical glitches when working on a selection with mask overlay where suddenly black rectangles with scattered pink, green and yellow pixels appeared at the selection's rim but I don't remember what I did before. One time it told me I was out of memory when I tried to convert a layer group in "draw isolated" mode. I have set autosave to 1 minute now. Fortunately PL opens up really fast.
drivers are up to date.
Admittedly I tried ot some fringe stuff before some of the bugs appeared. Not always though. I think I will have to completely rethink some of my workflows if I want to commit to this. Customization is great so far. Running under Wine didn't work on the first attempt. I have no experience with wine whatsoever though. I'll have to look into this.