Yes indeed!
We were already using PBR at the time, but since we mostly used Octane for rendering, we were exporting Diffuse/Specular maps as Octane didn't support the Base_Color/Metalness shaders most people use in Iray.
Since we ditched Octane for Iray, we're mostly using the Base_Color/Metalness workflow even though Iray can actually use both.
I sent you a link to the MATs as private message, we'll post them publicly here too asap, but I didn't want you to wait
!