I finally pulled the trigger after hemming and hawing for a while, and then I carried away testing...
Bottom line: Like most everyone, I can definitely feel a difference. The difference was more pronounced if I consciously tried not to tense up before hitting the pedal. It's a harder pull for sure and definitely feels more exhilarating. No regrets here!
I don't have a Dragy, so I did my testing with the Science Journal app on my Pixel phone which let's you record data from the accelerometers on the phone. The phone was clipped via USB into the charger during testing.
Testing setup:
I started at 90% charge and it was about 40 °F outside. I drove around a bit on local roads before testing, but still had 5 or so dots when starting testing, but by the last couple runs, there were no dots for both pre and post testing. With both pre and post, I started around 87% and ended testing around 81%.
I didn't have a great area to test, so I tested from a full stop at red lights on a local 4 lane road. Often, I was nervous about getting all the way to 60 and let off the pedal some towards the end.
I did my runs pre boost, charged to 90, bought the upgrade and did the runs post. I ended up with 5 runs pre and 11 post.
Results:
This is a box and whisker plot of the peak acceleration of my 5 pre, 11 post, and single run from a friend's P3D run.
This is the acceleration averaged across the runs. Again, 5 runs pre, 11 post.
Same data with the raw individual runs. Average for each are the thicker lines.
My takeaway is that AWD+ is closer to P3D than it is the AWD. After the boost, it accelerates with more force, hits the peak force faster, and maintains a lot like the P3D. Caveat here is that all I got was a single run on the P3D. Of note, there was no difference in the runs from 5 dots to 0 and no difference from 87% SoC and 81% Soc, but who knows what role the cold roads, battery warming and losing charge all played.
Hopefully this helps people make a decision. Stealth wasn't an option when I bought and this is the next best thing. Definitely happy with the purchase.