Interesting idea, but I wonder if you need more logic to do this, like a defined "override on" key and another for "override off". If not, that would mean if you were to type "/" in a chat message, you'd disable override.

Yes, I'm sure you could just not, but of course I'd forget to not, then I would, then I would be "off", then I'd hit enter to put it back on, which would send my main's chat, and ....

hmmm