UNISYS is using OOBA/MFA/KL on it's most advanced mainframe system to reduce resource overhead, increase security for workloads through out of band authentication, and simplifies infrastructure administration.

I have a fair idea where UNISYS deal is headed & who the users are/will be or already running it.

Just as a tidbit, The U.S. Defense Information Systems Agency (DISA) uses Unisys ClearPath mainframe environment.