Hi Richard
I have to drive using my right-hand and right leg only but since becoming disabled have only driven full automatics.
My understanding of AMT boxes is there still automatic but without a clutch pedal so can’t see why that would be any more dangerous than a full auto. That said, do you still need to select each gear, if so it could be a problem because you have to let go of the steering wheel to change gear but I’m only seeing this from my point of my disability.
To be rest assured Motability might be the best people to ask, I was going to suggest the government disabled driver centres that I used for this type of information years ago that used to be dotted all over the UK but can’t find them now, no surprises there.
Good luck.