[jbnicolai]

I use <C-s> myself, but <C-Space> works just as well I suppose. Not bound to any OS utilities on OS X afaict.

Thank you so much for pointing me towards that vim+tmux gist!

[danieloaks]

I use <C-s> for my local machine, and I make the servers I login to use <C-a>. I bind the caps-lock key to ctrl, so it works out pretty well, and lets me work with both local and remote contexts at the same time fairly nicely.