My 2245W has the same ex-IVES trucks with the two triangle cutouts. It's the same tender you show with nickel journals and the plastic nib on the slide shoe. Mine has a diecast whistle chamber.
About the 2245T, I went crazy years ago with the seperate sale whistle tender sets. I never saw or heard of a diecast tender coming in a seperate sale box. I think the diecast tenders - 2226W, 2245W/2235W and 2224W always came with a whistle unless there was a specific reason why not.
Those reasons would be export or sales to areas with odd electric currents, specials to keep the price down for department stores, and clean outs in 1942-43. Or any combination of those.