This is a carry gun? USPSA rulebook makes little sense
You're not the first and you'll not be the last to be deeply confused by divisional rulesets and differences. "Carry Optics" or CO is just the name of the division. At a high level - It's any DA/SA/Striker Fired Gun that is on an approved production list (usually 500 units or more produced), equipped with a slide mounted red dot, not comped or ported, without a magwell, and certain mag size restrictions. It's one of the two most competitive divisions in USPSA alongside Limited Optics (basically where SAO guns can reside like 2011s) and that also have red dots and magwells but not comps and ports.
In practice, it's where you'll find guys competing with everything from stock and custom glocks to M&Ps, Walthers, and a lot of the time heavily cajunized CZs like the Shadow 2. Many feel that the differences are so minor and people already gamify their guns so hard in CO that they should just merge the two or at least exclude the CZs and probably the waltz9 eventually from competing with polymer framed striker fired guns and stuff like glocks.
This version of the waltz9 isn't their actual "carry" (CCW) model, but it is technically carry optics division legal once they figure out a replacement for the magwell. The combination of the accuracy, weight of the platform, having a sight blocked barrel, and the light and tactile trigger has a lot of people thinking this will be the new platform to beat in CO (cost notwithstanding). I tend to agree, but, as always, gear is secondary to skill, stage planning, mental game, performance under pressure/controlling nerves, how you move and transition, and the other huge portion of actually shooting that matters way more.
We just saw the other weekend that skill in the right shooter's hands (Eric) beat a similarly skilled competitor shooting one of the best built 2011s ever made (EMG in the hands of Christian). Obviously that was a single event and snapshot in time based on their condition and performance that day, but there's also a sizeable age gap between them and they go back and forth historically on who's come out on top. The only sad thing is an American lost to a Frenchmen.