Grumman F-14A Tomcat at the Pima Air and Space Museum in Tucson. I had taken several pictures of this plane with my Sony A7rII and FE 16-35/4 G lens in May 2017. In February 2018 I made a B&W 13x19 inch print of one of those A7rII images for a print exchange. I like both that earlier A7rII print and the 13x19 print from this A7(m) image (both made on the same paper). At least with these 13x19 inch prints, I can't see any differences in detail or resolution from the A7rII 42mp image vs the A7m 24mp image.
While I don't have a strong preference for one print over the other, I certainly enjoy shooting with a monochrome camera again (having spent so many years in the past shooting with B&W film).
Sony A7(m), FE 16-35/4 G at 26mm. ISO 400, 1/125 at f8. Raw file converted to DNG with Monochrome2DNG. SilverEfex Pro TMAX-100 film emulation.