According to the REG, 'good cards' include covenants (http://www.redemptionreg.com/REG/Master/gloss_goodcards.htm), but it doesn't mention curses in 'evil cards' (http://www.redemptionreg.com/REG/Master/gloss_evilcards.htm).
So, the question is, are covenants/curses considered as good/evil cards? Either way, I think we need a change in the REG.