Sometimes I question whether to use QCTP or 4-way. IMO decision lies on combined operations a part requires; our work lathes are not equipped to exchange. My own machine I can rig accordingly. The work machines shortfall; turrets [4-way] index 8 positions but they're tied to compound, I regard this fitting out inadequate.
Sufficient incidents prove whether HSS or insert tooling is used, you get overhang/ interference/ poor tool clamping during chamfering, form tools, 45° necking, and other finishing sequences.