That came out awesome!
FWIW, I have quite literally not touched my HSS tools since I was lucky enough to win a Magical Skew (loser train ;-). I only use the R2 cutter, start to finish (the square will catch easily, and the round is too aggressive, IMHO). Depending on the plastic blank, I can usually get a finish from it that requires minimal sanding--sometimes none. It does take some experimenting. I'm usually just slightly below center and I tend to keep the handle up. I also switch between the angled cut and flat scraping. I run the lathe at full speed all the time.
I appreciate quality, sharp, HSS tools, but for me, the MS is the answer for pen turning--it at least tripled my output with equal quality. Of course, YMMV.