I think David said it right at the start.
Keep the big Nikon for when you need that press pass. Nothing like a big full dress SLR, complete with massive f2.8 zoom, lens hood and big flash gun for getting waived through. Also SLR's with motor winds are great for fast moving action. Also people react to camera, sometimes a little rangefinder gives the the reaction you want (usually none) other times it's that big SLR.
Horses for courses, plus film camera prices are plumeting (in the UK anyway) not a good time to sell.