Bandcamp allows custom domains but those still remain Bandcamp pages. It should be allowed to add custom domains as Bandcamp URLs: i.e. bandcamp.com autoselects but does not validate on the domain.

However the non-domain part of the URL (/album, /track...) can still be validated.

Example: http://store.terminalsoundsystem.com/

We currently have some of those URLs set as Bandcamp types, as it was possible in the past.