What direction of rotation should I mount my tyre?
I don't own these tyres but looking at the knobs I think it's obvious which direction would have more traction for climbing - with the "sharp" edge pointing backwards and thus prevening the wheel to slide back - and the other way round for better braking and less rolling resistance.

From what I've read, some people recommend using "less rolling resistance" setting for the front wheel and "better climbing traction" for the rear - seems quite natural. But the choice is yours.