Quote Originally Posted by RiceisNice View Post
Yes, but the vulnerabilities and damage reduction share cooldown with each other, and hypercharge has the same functionality of boosting regen effects. If you hypercharged for the vulnerbility, you won't have it for boosting mp/tp regen, and vice versa.
However, it is also a 2 minute cooldown compared to Battle Voice's 5 minute cooldown which you also won't have if you need to TP/MP if you use it on Foe's.

So, I mean, if you use Hypercharge at the start of a fight to increase opening bursts, you'll have it up before anyone needs TP/MP (hopefully), whereas if you use BV to increase caster openers, you probably won't (according to people who say they bottom out of TP in 3 mins).