I haven't been privy to details of many VC funded companies, but the ones I saw definitely had the VC General Partners investing their personal money side by side with money from their Limited Partners. That was reflected in the names on the preferred stock certificates from day one. (Probably don't do paper stock certificates any more).
I agree with your statement that "it's not that obvious" as to who should have control, and there are good arguments both ways. My personal inclination would always remain that the people putting up the money should have the final say.