Science captains are well suited for PvP
Just not having ALL sci captains, the debuffs and buffs are mostly team-support.
If you boost your sensor arrays as much as you can, the sensor sweep debuff scales really, really high.
Or you can go with deflector fields, buffing dampening field which is a strong PbAoE energy resist buff.
For Sci BO skills:
Klingon ships are (most of them) poorly suited as Aux-maxing sci vessels, but are decent if you focus on non-aux based skills. Aux-scaling abilities are usually very good if you actually boost aux, so you might be able to get away with the power-transfer consoles that let you switch between offense, shields, and aux quickly.
Personally I just stopped trying during OB and slapped scramble on a raptor and used sensor sweep to heavily debuff resists (pew pew, ship go boom

)