I think one "problem" with this whole "tomato pie" issue is that though Trenton's "tomatoes on top" style has evolved into that style...and is focused on a couple of survivors and imitators in the Trenton bloc, "tomato pie" used to be what most old time New Jersey places that sold pizza called them.
Many of these places, like Hudson St. Delorenzo's and many others in my childhood area closer to the Asbury Park shore, were started by Italian-Americans returning from WWII or the demand from those who returned, and had experienced "pizza" in Italy. (Many of the places that sold them were already Italian taverns.) Rather than call them "pizzas", a name which was only to catch on much later, in the '70s and beyond, they called their products "tomato pies", as did the Trenton industry. It meant nothing one way or another about the order of the dressings, however.
One photo I saw recently from my hometown (Freehold, NJ, that also of the more famous BRUCE, the poet/sonwriter) showed the still-thriving Federici's in the '60s. The sign is loud and clear "tomato pies". Then and now the sauce was on the bottom of the cracker style crust.
And, walter, though I don't know Resevoir, my college roommate grew up in S. Orange and brought back Town Hall sandwiches, which I really liked. The place went out of business for a long time. Then, about 5 -6 years ago, it re-opened under new ownership. The target audience (mostly ethnic) had long moved onto new pastures, and the place recently closed, never really catching on. So, Grunnings and Town Hall are but memories now.