It looks to me as though you choose which way out the track skirts face, depending on whether you want a BEF Matilda or a desert version.
We are inching closer to a decent range of plastic vehicles for the Battle of France. When Rubicon release their early Panzer III and Panzer IV, the Germans will be well covered (Warlord already do the Panzer 38t). The French need another tank to accompany the Warlord Char B, such as the Somua (and, of course, some plastic infantry). And the British need the A13 in plastic. Everyone except the Germans also needs an anti-tank gun (it would be good if Rubicon started focusing on non-German artillery pieces). The desert war is also much better covered, although a plastic Grant and at least 1 plastic British armoured car would be welcome.