Could Frost brand damage be added again by a HalfOrc with Savage Attacks on a crit?

@JeremyECrawford A frost brand gets +1d6 cold dmg, is that 1d6 'wpn dmg' that could be added again by a HalfOrc w/ Savage Attacks on a crit?

— Ken Ross (@RossPubGrp) August 27, 2016

Savage Attacks: add 1 of a weapon's dice to a crit. again. Frost brand is a wpn. w/ 1d6 cold as 1 of its dice #DnD https://t.co/CEa40TSIJ6

— Jeremy Crawford (@JeremyECrawford) August 27, 2016