Speaker Cable directionality: reversable??

I bought a demo pair of XLO ultra 6 cables which have directional arrows on the ends of them. The specifics of my equipment requires that I would either have to re-terminate them (to take the spades off the amp end) or else hook them up in reverse of the labelled arrows.
Is there any reason why the cable direction matters, or would reversing them just mean I would have to "break-in" the cables again.
Please help me out; I don't want to undermine the quality I paid good money for!

Much thanks for any advice!!