Though the podium is pretty massive and tall, VSLP's tower itself has a really small footprint. I'd wager it tops out before BNC.
628 St-Jacques took forever to be excavated and the basement levels built (lots of different constraints), but it's going up pretty quickly now. They're doing about 1floor/week and the TDC towers were averaging about 1.5, so I think it's doable.
Let's just see how long the first couple of levels go, they always seem to take the longest.