Presumably the relative performance on track of the two gearboxes is of limited interest to the 'not looking to track day it' O.P.
EDIT - on the other hand maybe it is, as just realised he also said he was interested in thoughts on the Auto's dynamic performance 🤔
Personally if I run two vehicles, then 'as a rule' the more different the two vehicles are the more fun it is swapping between them. So, if I should happen to be running an Automatic SUV as a daily (unlikely as I hate SUVs and I've never owned an Automatic) then all the more reason for my weekend/ evening sports car to be manual.
But I am biased against Autos......
Only reason I can see to get an Auto GT86 for road use is if you are going to daily it in stop start traffic.
Love the manual gearchange on my 86 which is certainly beautifully positive and short of throw compared to other manuals I have used in the past, would agree that the clutch action is not the best in slow traffic, but for an evening / weekend car surely less of an issue.