The Rohloff eXp will cost you around £1400 more than the Raven Nomad S&S for a bike with an equivalent frame and S&S fitted, but made from Reynolds tubing, hand brazed and painted to your requirements. It may take longer to acquire if you order at a busy time of year.
You will have the choice of many more frame sizes to get the best fit, and the option to have what ever you want in the way of frame changes and fitments. Make sure the frame rack fixing points are tapped for 6mm bolts if you really are going to carry 60kg.
The components are going to be the same whichever you go for.
For a lifetime investment, money no object, I would recommend the eXp Rohloff.
I speak as a proud owner of an eXp Rohloff, it is a delight to ride unladen or heavily loaded.