score:6
Just called the border guards at Lacolle (Canadian port of entry used by the New York-Montreal Train) and they said it's fine to hand in a printout of an electronic I94 :)
Upvote:3
I've tried it out myself a few weeks back and the answer is yes, they do accept the print-outs from the DHS website. In fact, your exit will be recorded even if you don't hand in your I-94 as Canada and the US share entry-and-exit information these days.