User blog comment:SpookyBoogie27/Light Novel Spoilers/@comment-67.176.158.104-20140207023318/@comment-9339850-20140207024900

No he doesnt use it anymore as in he cant anymore. The previous Boosted Gear wielders that were inside the "subspace" of the gauntlet, who were the ones who caused Issei's emotions to trigger the Juggernaut Drive, passed on when Issei created Crimson Cardinal Promotion.