There's less that 1mm difference in the overall diameter of the tyres when new. I'd guess that one pair is worn more than the other, but even so, the rolling circumference difference will be negligible.
It would annoy the hell out of me to have odd tyres, but if you can live with that, there's no reason why you shouldn't use them.
It would annoy the hell out of me to have odd tyres, but if you can live with that, there's no reason why you shouldn't use them.