Only menu to be modified?

Hi,

Sorry for this naïve question but I'm new...
I am wondering if it would be possible to use your extension only to get a new menu when mobile is detected.

I mean that I'd need:
1° to aggregate 2 distinct menus into a single one (or switch published/unpublished menus)
2° to change the menu appearance for a specific mobile version (scroll or other mobile styled menu)
(at least the second point would be necessary)

All the remains of the site would be unchanged (I'd only use "viewport" and "initial-scale")

So is that possible?

Thanks
Paul