I can report that the SR+ in dyno mode is a tail-happy, but mostly predictable little beast. Also can report that if you let regen kick-in whilst sliding, you better have fast hands/feet and lots o' room. Fun, but not OK for the street/daily, especially if one habitually drives like a jerk.
I believe this is the first car where I won't be disabling the nannies immediately upon entering it/starting it. Like cOoTeR, I read the input online about dyno mode and was prepared for 'super scary death time' when I tried it. It was not super scary death time*. The car's manners are actually pretty great for an unmodified open dif RWD vehicle with >300 lb. ft. of torque off 'idle'. (off null / null pedal?)
*= UNless, as pointed out by dsgrbc, the surface changed while hooning, then look out, its prolly gonna try and bite... e.g. Taking an aggressive left turn across a concrete drainage trough flanked by rough asphalt was exciting.
EDIT= Can haz spelling
Wait, are you getting regen in dyno mode? Our LR AWD had zero regen in dyno mode.