It's funny how obvious some things are in hindsight. I never once thought there'd be an issue with a 50/50 split; but yes, no one person has power of veto. Interesting about vesting equity though, I'd not heard of that before (naive much?).

There's a twist to the tale though: we haven't incorporated a company yet. No shares have been split; we've just got a verbal agreement that we'd divide them up that way. If I wanted to do a Zuckerberg, I could quite easily register the company and put myself on as the sole director.