I just now came across this thread. Hopefully, I can clarify a few cloudy items. Under 135 IFR passenger carrying ops, a SIC is ALWAYS required, even in a Seminole or 310. Many places operate without a SIC under an autopilot exemption provided by part 135. That is why they advertise that one must have 1200TT to get hired. They have to meet the PIC mins because the company doesn't have an SIC training program in place. The original poster is probably logging the empty legs as PIC. As we all know, as long as you have a Multi-Engine rating, you can log time in a multi-engine airplane that doesn't require a type when you are sole manipulator of the controls under part 91 as PIC, regardless of how little time you have. I hope this helps. Like I said, I just came across this thread, so maybe you guys straightened it all out before I got here.