Board Thread:Questions and Answers/@comment-26955371-20150920164120/@comment-5780397-20150920172533

Yes. Gin is very careful, and there was no need for him to lie to Aizen and tell the truth to Ichigo. Plus, he's renowned for using "tricks" in his fights (see his confrontation with Hitsugaya), and if he ever needed to kill Ichigo, intimidating him with his sword's supposed speed while not revealing the true nature of its power would surely prove to be a good strategy.