Both are fun, I am round robin leveling one of each AC until I choose what I want for a main and so far of the 8ACs (republic and sith have mirror ACs just with different animations and spell names even to the point where the talent trees are identical) of the sith the only 2 I have removed as possible mains is the Warrior ones, but thats just mainly its the one play style that I find meh personally.
With that said as for the cover mechanic on my sniper I flat out took the "take cover" spell off my main bar and just put the "crouch" one on instead because any time you crouch as a Sniper you create cover and so crouch is just as useful without those "woops I just rolled into an additional group while trying to take cover" moments. Every one in a while I will use "take cover" just for the fun roll, but since crouch does the same thing mechanic wise without the chance of rolling you into adds or facing you the wrong way that's what I mainly use and it doesn't feel clunky at all.