On Thu, Nov 29, 2018 at 12:51 AM Federico Leva (Nemo) <nemowiki@gmail.com> wrote:
Yuri Astrakhan, 29/11/18 04:14:
> The "Q" prefix has a strong identity in itself.  Anyone will instantly
> say - yes, it's a Wikidata identifier

But that's because most people only know one Wikibase installation, not
the other way around.
 
Of course! More specifically, at OSM that's the only Q-numbers people are aware of. All other ID systems do not have nearly the same level of recognition.  It would be silly to wait for government agencies to switch to the Q-numbers too, right?  Or to wait for 5-10 years until (and IF!) Q numbers become more common at other projects that are large enough to become well known, and use that potential future as a justification to not use a much more convenient system for the next 10 years.  The cost of that 10 years of "wait and see" is a significant user confusion.