He's joined the Steamers on loan until the end of October.
Hugh initially joined up with Glasgow on loan from Edinburgh during the 2014/2015 campaign but signed up permanently at Scotstoun last season.
He played a number of games for Warriors at the start of the campaign but spent most of the season with the Scotland Sevens squad. He was part of the squad that won Scotland's first World Sevens title in London.
Prior to his move to Scotland, Hugh represented New Zealand at the U20 level as well as playing for Otago.