I wonder how different these would feel compare to Kailh Box Red. Structurally they both have the "box" to prevent wobble (similar concept to Topre MX sliders) the only real advantage of this is less contact = less friction.
Though from what I gather Kailh Box Red is already super smooth. At this point I wonder if it's favourable to go with Box Red since you can pop them into existing PCB and it would just work.