In the 2018-19 Regional Four Day Competition, he was the leading run-scorer for the Leeward Islands team,[7] and 2nd highest in the competition,[8] behind only Devon Smith; He scored a career-best 158 that season against Trinidad and Tobago, and followed up with 77 not out in the 2nd innings. In the summer of 2023, Montcin travelled to Yorkshire, England, to play for Whitley Hall Cricket Club, playing in the ECB Yorkshire South Premier League.