User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-119.93.94.58-20121022090046/@comment-83.165.23.90-20121023143147

Basing on seen videos, the Longsword mechanics have changed respect to Tri: now, even if the "energy bar" is full, the spiritual attacks (R button combo) will spend energy. Well, videos can explain it better.