"You can't replicate the experience entirely on a portable," Ono said. "But I think if we made a small joystick that you could just keep in your bag, and maybe even if you're in economy class, whip it out during a flight, put your Vita in there, and replicate to some degree the arcade experience, it would be really awesome."
Keep in mind that this doesn't mean a Vita fight stick has been confirmed, just that they're talking about it. Ono also mentioned that Capcom is planning to make the DLC from SFXT compatible between the PlayStation 3 and PlayStation Vita versions. "Yes, they're different hardware, but they're part of the same Playstation family, so to speak, so we're already talking with Sony about ways to sync things together," Ono said. "As long as you're using the same PSN account, things you've purchased on the Vita version will work on PS3 and vice versa."
And there you have it. It seems as though Capcom's success in the portable market with Super Street Fighter IV 3D Edition has made the company ambitious to see what they can do with the Vita. Would you be intersted in a tiny fight stick if one were made available for the Vita?
Street Fighter X Tekken will be coming out for the PlayStation 3, Xbox 360, and PlayStation Vita in 2012.