Carrion or focus power or condi

i like the power builds. What ive always done. And ive been fine in spvp and wvw with it. But i felt like trying to do a jack of all trades. So the question is, can a person still be effective with a combo of both at same time like carrion’s. I always liked versitility but i always opt for zerkers because its safe. Second question is, if it is viable, I havent played since beginning of HoT so now that expertise is out, should i be aiming for that as well? Mind u i get these are very generic questions and max/min will probably say no. Im not really about that life but i also dont wanna gimp myself and no one will group with me

Btw not sure why this posted twice