WanderingMystic
Hero
Yeah I have to agree that I would rule it after you make your attack roll.Not for me. They could have used 'before you roll to attack' if that was meant (or conversely, 'when you hit', if they wanted to be lenient) - now we're in the hazy middle-ground again.
Like, no-one with a Graze weapon is looking to miss with it on purpose, but giving up on that Graze and then missing would make them look ridiculous. And also, it's a lv9 feature, might as well make it actually do something.