Yes, I use a 1950's Pinnock daily and will be using a 1912 treadle (after I restore it in the new year). At the moment my Pinnock is sitting on top of the treadle cabinet so I 'spose I'm actually using them both! My 80's singer has been sidelined (I have no great affection for it), but will probably hang on to it as a backup.
Sounds like you have a great machine...(we love pics....hint....hint).