Exactly so; you would now be down to the standby generator which, as you know, is powered by the green hydraulic system which in turn means that all normal green hydraulic systems have now been lost (i.a.w. QRH Card 30A).
That would indeed mean loss of nosewheel steering so you might have to get a tug to get you on to stand.
On the other side of the coin, if we were to imagine a small fleet of 5 aircraft and make the assumption that each aircraft flew 6 sectors per day then the fuel saving would be 5 x 6 x 50 = 1500 kgs per day (which is about the fuel burn for one aircraft from London - Brussels).
If we then take a 360 day year (allowing for public holidays) then 180 round trips from London - Brussels are being p*ssed against the wall for no good reason.