In reply to dainis.

the intended policy appears to be: no use of “wordpress” in domain names, other than sub-domains.
Interesting wording. Tuth is, "intended policy" is the problem here, huh? There policy statement includes use it in subdomains, don't use it in TLDs, and if you DO the latter and redirect elsewhere please consider giving it up.

But the use of split parts of the TLD including extensions ending or otherwise including "SS" isn't covered at all—and could be interpreted either way.