pianoteq supports pitch bending, go to 3.6.1 (2010/05/20) in the change history, it implies that it has it, it also accepts scala files which need pitch bending.
"Fixed issue with multi-channel pitch-bend messages when used for microtuning purposes (with devices such as h-pi )."
(
https://www.pianoteq.com/changelog)
I sent an email to the consultant, hope he can answer. everything he needs to know is in that email.