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Hi mate, is it OK with you, when I put the Pokémon from the giveaway in my thread, I put your name with a link to your thread behind the OT? That's what I do by most of the Pokémon which respective owner asked me to put his name on it.
It probably could, but damage calcs would probably be the way to figure it out. You'd also need to know what you want to outspeed, as to decide whether to run a +speed nature or +attack. It probably wouldn't hurt to ask in the SQSR thread, maybe some people have used one before.
I seem to remember lonely being the nature the analysis used to mention in conjunction with hustle and extremespeed. I'm not too sure about porygon, I think the only mixed set that was ever up involved sharpen. I don't remember the nature.