Chaos Falcon Wing Cape or leave it clean?

Personally, I don't think 1 attack makes enough difference for that to be considered a big risk, and capes are somewhat lacking in other possible effective scrolling methods so I'd think: "I'm going to chaos this eventually so why not now?"

EDIT: @above: Wow you must have an insane amount of attack. Also, it's expensive and requires significant effort to perfect using 20%s from renegades shop but if that works then go for it.