The market for regular family photoshots - and therefore the total number of active town studios - fell off a lot after the 20's, and especialy after WW2. There was no need for new equipment for new studios , no real technologic advances, requiring and the "turn of the century" studio cameras and stands couldn't be worn out!
So new studio camera/stand production must have been low everywhere - apart from commercial industrial/product studios who benefited with growth in the use of photographs in advertising/magazines etc.
I have seen quite a few reisekameras with tambour plate holders - mostly 13x18 and French and a single 18x24.
I can see that the holders in the institution camera is 1/2 tambour/ 1/2 trap door single plate type. The more modern(?) has double tambour I think - must also be a single plate type as the "central" mounting slot is nowhere near central!