A sign of the swine being completed by cruciverbalist, finally – eureka! (3,6)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

A + [ HAM OMEN ](what you might call a sign of a part of the swine) plus ( being completed by ) last letter of ( …, finally ) “cruciverbalist”. Defn: The moment the light dawns on you and you shout …/”I’ve got it!”.