I hope this doesn't count as highjacking the thread, but if anyone is interested, I found it. I wasn't even looking for it, I just happened to pick this fic to re-read, and there it was. From Meredith Knight's "All Stirred Up":
Lois's eyes flicked to his cape. "I see you got another costume," she said.
He grimaced. "I prefer to call them 'suits'," he said.
Oh, and getting back on topic, I wondered also about the "S". My theory is that it will make its appearance on his suit shortly after they find Martha. Cute how they named him "Superman" even without his "S".
