Dave,
I am intrigued by your collection of SketchUp drawings. I can identify several (e.g., the one at the far left front appears to be Chris Gochnour's Bench from the 2018 Tools and Shops issue, but I am curious about the plan in the center back row which appears similar, but lacks the breadboard ends and features a Veritas Twin Screw for the front vise. Can you comment on the source (I could not find it on FWW,com).
I have been looking at various workbench plans and have the Twin Screw vise and Lee Valley Tail Vise waiting in the wings as I stumble with various designs (and my inevitable procrastination!). One other design I like is Robert Lang's 21st Century Workbench featured in the October 2008 issue of Popular Woodworking. I like his split top design with reversible tool trays, but as is, it lacks a true tail vise. Although a minor part of the final design, I prefer the versatility of round dogs versus the more traditional wooden dogs since the round holes also support holdfasts and the Lee Valley family of numerous bench accessories.