Alright, everyone, open Tome of Magic to page 14. Look at the sidebar on the bottom of the page.
An interesting build might be a Cloistered Cleric who swapped out the Knowledge Domain and one other for Domain Feats, and took Divine Magician in place of his Domains.
If you do so, a two level dip in Binder will lose you nothing, but will get you 5 abilities from the Binder Pact Augment list upon hitting 20th level. One more level in Binder, and you get a bonus feat.
Now, to abuse this...
Oh, and the Paladin version only says you can't USE Divine Grace, not that you lose it. So nab Gift of Grace and pass Divine Grace of to your allies. Use it to qualify for some stuff.