Didn't Welling's contract stipulate that he would never wear the Superman outfit in the course of the show? I wouldn't see that changing for the screen. Although if he were offered enough money he might change his mind.
Assuming Smallville continuity even allows for the existence of Superman in the first place, or if it leads to something completely different.
Welling wore the costume in the last episode, and flew as Superman happily...
it did lead to Superman of sorts lol
M
Ah. I see. I have never seen the show but I heard how different it was from mainstream Superman continuity - they seemed to be going out of their way to be different, so I figured they were leading to something else entirely. But if the costume appeared even once then I guess that's fine...