Dazzler also defeated Klaw once by actually absorbing him.
I've heard about the Banshee/Dazzler combo but I don't know when it was shown. I'd be skeptical if Alison can absorb Black Bolt's full on voice, let alone a scream; but weirder things HAVE happened. I don't know if you read New Excalibur, Sazzler is a part of the group and apparently she died and came back to life. It's something that hasn't been explored yet since they just set it up, it'll be interesting to see what they come up with.
