I have a 2019 V4 and had this SW installed at 600 mile service, along with Akro exhaust. As soon as I got the bike home, I did a 20 mile street romp with the OEM Supercorsas, I think with DTC conservatively set to 4 versus my usual 2, and noticed nothing sketchy at all. This included some fast drag starts and somewhat aggressive acceleration out of corners. After that, I did my first track day, still with the Supercorsas, and went pretty hard with no traction control oddities whatsoever. Zero sketchy moments. As the tire degraded session to session, I felt the usual slippage and intervention and all was good. Then I had a second track day, this time at super-slippery Chuckwalla a day after they resurfaced it, and ran a 50% used SC2 rear tire with DTC set to 5 and 4, out of an abundance of cuation. (The track was slippery as hell!) Again, slipage and intervention felt as expected. Nothing weird or unexpected
I tend to agree that spin is spin, and the Ducati traction control is pretty great whether you have the stock SW or this "enhanced" SW. I think this SW is nothing to be worried about if riding on the street. I think the TC algorithm in this SW is enhanced to a degree that probably only a club racer or above, with a really dialed in setup, might notice. As a definite plus though, the shifting is much quicker/better at high revs, up and down, and I am looking forward to seeing an unlocked speedo on some of the longer straightaways.
I have my first real unrestrained test this Sunday at Willow Springs. I'll have a fresh SC1 rear and will probably set DTC to 3 before 2. I'm expecting very good grip from the rear tire and a very fun day.