Some of the concurrences would have found the section void for vagueness, but not unconstitutional; others would have found it unconstitutional for trademarks with a political speech element, but not for ordinary trademarks. The dissents would have upheld the constitutionality.
Now that the case might be before the Supreme Court, it could affect the pending appeal over the Redskins trademarks. If the traditional analysis applied in the Blackhorse case is upheld by the 4th Circuit, that Section 2(a) does not affect speech and thus is exempt from 1st Amendment scrutiny, then we could be facing a circuit split. Further, if the Tam case is taken up and decided by the Supreme Court before the 4th Circuit can rule in Blackhorse, it could affect the outcome as well.