There are two ways you could do it; alternating same-sex couples, or male/female couples. The former would need an even number of couples, or it wouldn't look right. They'd be wearing different kit. It's a question of aesthetics. As far as dragging it into line with controversial current political thinking goes, well... if you go down that route, you've thrown the whole notion of preserving tradition in the bin.
I promised myself I wasn't going to get involved in another Mudcat bloodbath, so that's me out.