I got my Gyakusou stuff today—shirts and shorts—and will be sending everything back except one pair of shorts.
I sized up on the shirts. The fit is passable but not great—the body is shorter but the sleeves are longer than usual. I'll be sticking to the Dri-Fit knit shirts, which are perfect.
I like the shorts, but the crazy colorways don't look so good with most of my other gear.