They put these Tenite stocks on some Stevens 22/410 and 22/20 combo guns (that model was re-branded the Savage 24 in 1950), so it's completely plausible that they'd have also put some on 219/220's in that same time period. Savage owned Stevens as early as the 1920's, and as far as I know, allowed Stevens to operate essentially independently until after WW2. It was then that Savage left Utica and merged all operations into Steven's Chicopee Falls location, and for the first time they were one consolidated company. This is my understanding, so if someone knows better please enlighten me.
Might they have combined some design elements prior to WW2? They certainly could have. FWIW, I'm a big fan of the 24's, as is the FFL guy I use, and he showed me a couple of his...including one with the tenite stock. They are very handsome, and from across a room you could be forgiven for thinking it was very fancy wood.
But according to him, they are really brittle, and could crack if the gun was fired in very cold weather. Perhaps that's why we don't see more of them.
Chris