Bartender 99.9% win. The default behavior of some status menu items not being command key movable is bad UX. Combine that with, as others noticed, accretion of icons that the menu bar lops off an arbitrary number of left side of the status bar doesn't help matters.
No big deal. If one wanted to exploit NSMenuExtra with an App Store app, a separate web downloadable "plugin" would be able to take over this sort of "verboten" functionality. Coordination via group container IPC would make this work (eg plugin present ? Tell plugin to do its thing and don't show the menu : fallback to crappy NSStatusBar).
