XV spare wheel directional tyre

[Nscow]

Hi there, I have a diesel 2017 XV with directional all season tyres, I also have a spare tyre of the same make, model and size which I would like to use as a full size spare. As they are directional tyres, it would be a direct replacement on one side but tread pattern would be reversed for other side, with a 50/50 chance of a puncture passenger/driver side. 
Would this be ok for short term use on wrong side until a puncture was repaired like a space saver?

Is there a danger of diff damage or other problems? Or would a space saver be a better option.