Here's a video from the original Lionheart run a few years ago which is a brass model.
Dean goods is a great suggestion, I'd like to see a 2251 especially given Heljan have dropped it. Or perhaps a 4F.
A few updates from over the Christmas period, the biggest one being the V14 version pushed back and an additional later version of the V12 in its place.
Test sample photos below
Personally I think these look great and seem to be progressing very quickly in typical Minerva fashion.