It sorta stretches the imagination to see AB endorsing such an item that they don't offer "in house"....
...maybe one day after it is offered as a nextgen option to a neoneo model 350 then maybe the wheels might start turning for such a retrofit
Not sure what you mean by "in house", but BAES hasn't been part of the AB consortium for many years. I'm sure that if approached by AB as a potential customer for this sidestick they'd be delighted to negotiate a sale of sidesticks for AB to integrate and certify on their aircraft.
PDR