Ok so sounds like I'm sticking with my dark stalker instead of WW, cause Im mostly Pvp:ing.I am a werewolf stamina nightblade but never put the werewolf ultimate in my skill bar. I always wanted to be a werewolf because my favorite character in WOW was a Worgen Druid. I cannot stand werewolf in this game for many reasons but the main is that the transformation is buggy. They said they fixed it but I always have problems with it. I also hate the short timer. I am a explorer and while you are in werewolf form you cannot stop killing and feeding or you lose the form in a blink of an eye. And last but not least, in my opinion WW is terrible for PVP.
And now seems like that changing to WW may be smart. LolWW in PvP can put out insane burst using the fear and then Howl of Agony (the 30% bonus damage one I think). The light attacks and poison claws also ticks for very high amounts.
Biggest problem with WW is not the timer so much in PvP, but rather that while in WW form you only have 1 bar, and everyone knows what your skills are and the burst combo that you trying to pull off.
But there are players who make it work well. @FENGRUSH may have an opinion as he uses it to good effect. @Telel runs a whole guild of WW in PvP, he may drop an opinion for you also if he wishes.