yup. I play Elena a lot online, since I don't lose much with Chun and that's no fun. she's very viable once you figure out how to play her, and she's a character with a reputation for getting better online. I'm pretty skeptical of that myself, since unless you're in ridiculous lag you should be able to react to her mixups games on sight, but it's undeniable that you'll see a lot more Elenas online than you will in real life (they're all bad though).
Q is way tougher. he's viable, but you gotta be really patient. he doesn't have much of an offensive game, he basically makes his living turtling, parrying a lot, and punishing when the opportunity arises. he's a challenging character, especially to start with. I think skull bonek mained him when OE started and he got frustrated pretty quick.
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http://www.youtube.com/watch?v=npHDxSvwCE0