Well chaps, if the time ever comes (and let's hope it never does), it would be nice to have the choice about the precise niceties of the slope....
The slope might well be just one factor in deciding where to skilfully grease the aircraft onto the terra firma. If the aircraft can't be brought to a complete stop in the air, it will be a fencepost hitting me between the legs that worries me most.
So if I had the choice it would definitely be uphill or along the slope, for reasons already stated but preferably into wind.
Of course, if you land outside of the published sloping ground limits don't forget to write it up in the tech log