I feel like the best zoning variation is Marksman. I can already see Low Sand Roll into Low Shot being a fullscreen frame-trap. I also feel as though Outlaw will be good for a footsie-based hit-and-run style where you get in, get your meterless damage & DoT, and then play more defensively whilst throwing Sand Bombs & setting Caltrops.
Gunslinger I'm honestly not too sure about. Perhaps Stand Off Stance will be really useful in pressure, or in the neutral. Perhaps Low Sand Bomb into Coin Toss will be a fullscreen frame-trap.