In response to Ross's request, Peter Michael Prow has cast some figures (I still don't have the moulds) and photographed with the older Rossbach French Hussars (note there are no right arms on the new figures). The photos are on the PA Facebook Page - I have pinched them:
The Rossbach figures are the two bottom left. I have cast up a couple of units of the older figures, but personally I do not like the poses so only painted up one of them.
The new figures are more to my taste, and with the variation in horses and arms should make up some nice units.
And close ups with the two horse and head types (I think the officer horse might be different again).
And finally one with the Grenzer head.
If you have any questions please raise them in the comments and hopefully Peter will respond.