Conventional or Sumo?

Hello,
My best deadlift is semi sumo. In Boris' app programs, it seems either one style or the other is implemented in day to day training, just looking at the main structure. Should I stick to what I am best at, and ditch conventional, or add in conventional deadlifts? I've heard many great powerlifters who specialize, but I would like to hear Boris' main opinion on this, if any of you know Boris (Robert Frederick most likely does) please help me out. Thanks.

Train the deadlift style you are strongest at and perfect it. If it's semi-sumo then use semi-sumo. You could always program in an other varation of the deadlift in a double session for example.