Sewabu started in his early playing days of secondary school rugby at first-five, wing and fullback.
He later switched to flanker/number 8 when he left school, a move welcomed by his former mentor Buck Shelford due to his tackling ferocity and clinical play.
He played for Rewa Colts, Tailevu Development XV, Malolo in the Fiji B Division Comp before he pursued a Diploma in Tourism Studies in Auckland, NZ in 1997.
He started his sports management and coaching consultancy business called Vunilagi Pasifika Ltd. and has been involved as a technical adviser to a number of teams around the globe.
His personal goal is to go back to Fiji and coach the national team at and 2019 Rugby World Cup.
He graduated with an Executive Masters in Business Administration at Massey University in 2013 and he is also trying to help Fijian and Pacific rugby players manage their finances.