Anyone with some critical experience also with the ipad pro pen?

I'd really like some comments there. There's a lot that goes into writing and drawing, and all the online reviews I've seen seem just to praise it.

I used most digital writing devices starting from wacom tables (first intuos series), to laptops with foldable screens and currently using the rm2/rm3.

I agree that nothing still has the precision of a real pen or pencil. I can lazily fill and shade even with a micron fineliner when I want, and simply can't replicate the same precision with anything else I tried. I could buy a lifetime supply of the best pens and paper with the cost of the rm3.

Writing is mostly fine, but when drawing I notice immediately the precision just isn't there. But still, at least on the rm (both 2 and pro), the digitizer is well calibrated, and the feel is good, the pen is actually like a pen and not the sucky abomination what wacom like to call "pens" or the tiny unusable styluses of the samsung "note" or lenovo yoga series. The show distance between tip and display is very good, and even though it seems ridicolous, the slighltly shorter one on the rm3 makes a difference. The rm2 is still requires a bit too much pressure for my taste (I have a light touch being used to mechanical pencils, fineliners and tech drawing); the rm3 seems slightly improved.

I can still tell instantly that lines are occasionally wobbly due to the digitizer's grid and pen position.

That being said I got the rm2 at some point, and it's the first e-notebook I actually stuck with because it's effectively "endless paper" and has reached the "good enough" feeling for me. I used to have tons of sheets of paper with notes, now I have somewhat less ;).

I have bad hand writing and over scratch paper with pencils... I greatly prefer the e-tablets for writing, so ymmv. I'm 47. I just did 6 months of college classes out of the blue, I did about 50/50 paper/tablet so this is based on about 100 hour recent testing. I had to practice a lot of mec pencil and paper as that's how our exams were.