Well no and partially yes.
I meant the applications that are usually used to access the application stores OpenRepos and Chum (a.k.a OBS).
These applications are Storeman and Chum GUI, respectively.
The applications Storeman and Chum GUI use functions which are not allowed in Jolla Store, which is why I wrote:

Both Storeman and Chum GUI use functions which are not allowed there.
Whether applications available from OpenRepos or Chum are harbour-compliant or not does not have any bearing on the possibility of their UI applications, Storeman and Chum GUI, being made available in Jolla Store.