Are we talking Brandon Allen production? Because they don't look all that similar to me as far as QB style. Allen is probably 3" taller and has a longer stride and throwing motion than white does.
Production aside, I think Sean White looks much more like a Drew Brees type QB than Brandon Allen. I don't think White will ever reach Brees production, but he's more that style. Smaller for a QB, more athletic than many give credit for and has a more compact throwing motion.