I have and had some Hirth switches. I bought a bunch from a forum member. His opinion, of which I agree with, was they are good for sidings.
I concur with what AlanHN said.
I would like to add, in my opinion, you do not want these on anything that can catch fire. So a concrete floor is OK. I had one burn up on me when something "got stuck" and the coil stayed on.
I had so many of them, so many were in bad shape, I just did a "wheat from the chafe" moment and pitched the bad ones.
I assume from the OP's comments that Ross Tinplate will not work.
Oh oh oh - I need to point out these are not O-72 switches! They are like numbered switches, they depart at a straight route.