If you do an image search for the cadet bands the photos of various bands pop up wearing these helmets.Yes according to my research a copy of the 1878 pattern home service helmet is being reproduced, Christy's is definitely making some, I was in contact with them, but a minimum order is 6 helmets.
Heres a link to their website, under the business name of C.W. Headress
http://www.cwheaddress.com/product-range/helmets/