We've switched over to using the final rhel7 content finally.
Sorry for the delay.
As you can see from the epel7 build tag in koji:
http://koji.fedoraproject.org/koji/taginfo?tagID=259
we have the following rhel7 channels that we are building against and
will not conflict with:
rhel7-server
rhel7-rhel-extras
rhel7-server-ha
rhel7-server-optional
Hopefully we can get the wiki page with package contents updated soon.
Thanks,
kevin