ah i see, either way you still end up with tights then
i agree it doesnt get that hot in the UK (after running in Madrid) but ill stick with the running kit im used to (i use 3/4 tights in winter and prefer short shorts tbh) and get tights for recovery
trail rat i reckon anything over your skin is going to impinge its ability to use sweat properly- my humble opinion of course but if sweat evaporating is intrinsic to cooling i would have thought nekkid is the way forward.