I don't know where you can get a switcher although we know that Axiom does have at least one. Perhaps they would consider productizing it as there appears to be demand.

Why don't you try Jake's idea instead? The switch-over won't be seamless but it should be adequate for your needs.

Let us know what you find out.

BTW, you shouldn't try to establish which speakers are superior using just your ears. After all, you are only human. Now let the flaming begin (2x6 where are you?) .