I'm not even looking at the screen while im switching controllers. Im picking the controller up off the floor while at the same time inputting the buttons, and finishing them up if i have to after im done picking it up. I also have time to switch controllers while characters are still doing all their attack animations. Like scorps last combo in this video: Im already picking up the controller between the first and second hit, and still have time to breaker before the 3rd hit connects.
Me being able to do this on the first try in practice mode should say a lot. Thats all. If you know how to do these and have done them before, then doing them is not so impossible. Its all about knowing when to pick up the controllers, being able to do it without looking at the screen, knowing the timings for everything in the game, etc. Very rarely do i use my foot anymore. I've actually done damage to the ligaments in my foot from using it. Its very hard to keep the controller straight or even be able to pick it up off the ground in a spot thats comfortable while using my foot, let alone setting my toe under the analog for the breaker in time.
And lastly, yes, i tried to make this video as unique as possible. It is in a lot of ways the "ultimate" double combo since it is so varied. And doing it on first try in practice mode was no slouch either.
Thanks for the post, Karate.