it is not old hat for me - I have seen metallic prints, but they are very expensive and not normally done here because of that. I have considered doing metallic paper prints tho- I think they will be very suitable for my B&W nudes
Expensive, okay, they sure aren't cheap. OTOH, as we saw in the Bay Photo video, when you consider printing, framing/mounting costs to get a standard print on the wall, the difference in investment costs between the standard and metal versions is not so much.
I took one of my images to my lab to have them print and frame it, and by the time I was done I was in it for over $100, and this was a 9X17 size. Oh, they did a good job, but it was not inexpensive. To be fair, I have not inquired about how much it would cost to do it on metal. But, that thought lingers.