I am not really a stickler for prototype operations, but on this point I disagree.
Eastern roads did in fact use Vanderbilt tenders (the C&O being one that jumps to mind).
But even if you are making up a completely fictitious railroad set "somewhere in the east",
there is a certain look to the equipment that operated on the east coast during the steam era,
and that S-2 tender just doesn't fit in to my eyes. It's not just a Vanderbilt tender.
It has that bulkier look to it, with straighter sides and top. A different Vandy tender, yes.
One of the Bachmann C&O Vanderbilt tenders would look like an east coast unit.
But GN and NP style tenders really look western to me. Of course, I used to
model a lot of PRR and NYC stuff, so I am sensitive to the styling differences.