User blog comment:Wolf night10/The Final Getsuga Tenshou/@comment-1712587-20100611075510

considering the explanation of how a GT works - http://www.onemanga.com/Bleach/161/05/ - it's all about the manipulation of Ichigo's spiritual pressure. therefore what he thinks of as his only weapon may just be most bssic way it can work. it could be used in a way similar to shunko to not just use kido but his monsterous spiritual energy to completely envelop him in an armour that is not just defensive but deadly to touch.

couple that with his Bankai giving him the fastest speed of anyone shown in the G 13 and that's a force to be reckoned with.