Stream?

[Fat Tire]

You can bind switching actionbars to keys, yes.

The default bindings to the normal actionbars are shift and the number of the bar with most addons. Shift + scroll works often aswell.

Might be stupid question here, but do you need to switch bars to use the spells? Is there a way to use the spells on the other numbered bars without having to switch?

That was going to be my next question. Thanks for answering the first.
To me it looks as if he is not pressing a shift, key bind, hotkey etc. to move between the different bars. Maybe I missed it in the videos?