You are over thinking this. Its a 91 leg that (I will assume) you have all the requirements to act as PIC in that aircraft. If that is the case, you would not think twice if it was a C-172 or Piper Archer...If its a KA90 or Pilatus, doesnt make a difference If you are legal to fly it, log it PIC. When you show up to the interview, your logbook will simply say N1234X, 2.2tt, 2.2 PIC etc. They will review the log book to make sure you have the hours. Thats it. Its 91, legal to log, make it more complicated than that and be ready to answer the questions when they ask. If you need those hours to meet the TT or PIC requirementsu, according to the FAA, you are legal to log it. If they ask you, y.ou just say those hours are logged in accordance with FAA regulation.......