Ok, thanks. Guess it will be up to the TO to decide if that's the interpretation he want's to run with.
You may just want to check with the TO up front and just say "hey, which way are you running that rule?"
But definitely point to page 10, step 3, and the sidebar on page 12. They at least show that rerolls are clearly covered under the 'modification' heading, and the FAQ wording is a bit weird but definitely seems to indicate (as comfirmed by Knifffen) that only the attack roll itself, and not any modifications of that roll - to, a bit counterintuitively, include RErolls - are affected by the special text on the HLC.