Not me. All my magazines are loaded homogenously, unless I run out of XXX 9mm and have to mix 'n'match to finish up a magazine. I don't see the point.
I certainly agree. Alternating different rounds is basic armchair gunfighting theory for the obsessive. However, while the practice may be of dubious worth, it probably hurts nothing if the ammos all feed reliably and the points of impact are close.
