Zbrush matcap conversion for 2.8

Is there any way to convert Zbrush matcap ZMT file to EXR file for Blender 2.8?

Probably not the way to go and pretty hacky, but I just screenshot a subdivided sphere with the desired matcap on it and a black background in zbrush and convert that into an exr. Does the job, at least good enough for my needs.