It may depend on what exactly your priorities are when you say minimalist—size, weight, number of objects / ease of keeping up with, etc. Looking at weight, a rigid plastic 32-oz Nalgene is listed as 6.25 oz, and the GSI cup linked in the article is 4.9 oz, so 11.25 oz total and in arguably negligible extra space beyond the Nalgene itself, since it nests. The 27-oz Klean Kanteen undercuts that at 7.25 oz while trading away 5 fl. oz. water (and thus ~5 oz water weight, too, for better or worse!). Do they make a single-walled 32-ouncer? Nalgene lists its stainless 32-oz and 38-oz at identical weights (really?): 13.375 oz. I’d say that makes the Nalgene + cup combo rather appealing for leaving in a BOB. But yeah, for EDC, you’re not going to be nesting a cup with it if you’re actually using it daily, and the Klean Kanteen looks like—I’ve never owned one—it would fit some cupholders or an outside backpack pocket, while also blending better in a professional setting.