As a norm I used to get to work around 20mins before sign on - that allowed a nice non-rushed flight planning. That extra 20 mins will now be used to travel to the domestic airport from QCC and get a coffee - it will still allow a nice non- rushed flight planning - which will commence no earlier than the exact sign on time, with the plane perhaps getting away a bit later than it would of.
...but who are we kidding even then - it only takes 10 mins to run through the notams and chuck on an extra tonne or two of fuel.
Also don't forget, whilst they may not pay you more, the flight time limitations I believe start when duties associated with work commence - that may now be earlier if you have to get to earlier QCC to account for the transport across.