It looks like the S2carry has the Shadow2 frame, not a legacy CZ75 frame. The difference is visually subtle, but significant when you hold them. The beavertail on the S2 is more rounded. Not quite as rounded as a P07/9 though, which I’ve carried AIWB comfortably, including while hiking in rugged terrain.
I've never carried a S2 AIWB, but I think it would work fine. Looking forward to hearing if that's true.
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