I like the paint a lot; not bad at all with a bit of wax and foresight. I do like bikes/machines that show their age proudly. If it were me I might use it on a set of rollers, hang it in the shop, and take it for the occasional (real) spin at the very least. Wouldn't relegate it to a trainer. That's beater territory and that your Pin is not.
Tough to feel handling on a trainer.
Your Mondonico is beautiful, btw.
"The Pinarello handled beautifully, fast steering."
Why is this in the past tense?