Those examples are almost as cool as sex! (Well, perhaps depending on who you’re married to.)
A few weeks ago I saw a quote for a plastic overlay for a front panel. The cost for the overlay was more than the cost of enclosure plus BOM-cost for the electronics inside it! Now I’m re-thinking my attitudes about using PCB’s as front panel overlays on prototypes or even LRIP (low-rate initial production) models. I always thought PCB’s-as-front-panels looked cheap and tacky at best, and a poor excuse for a front panel at worst. Your examples nake me think this idea might be more viable than I thought.
Dale