It's all in the frequencies - sit yourself right in the mix and you won't have a problem :)
I've gigged both 4x12s and 2x12s, with and without other guitarists, and still heard myself fine.
Hmm, suspect you're probably right about the mix thing, and although I understand the principle, I've never quite managed to pull it off. (Any pointers?) Also, I do find that, depending on where I am in relation to the cab, it
does make a difference to how well I can hear myself.
The Zilla has an angled baffle so they point more upwards
Ah, that's interesting. Although presumably, with it starting lower down at an angle, that means it's fairly dependent on how far you are from it?