You’re the PIC, PJ, so I’m not going to presume to criticise your judgment and decisions in the circumstances, especially if your training department has given you advice on the subject. All I can say is that I don’t sit, remaining mute, as old mate continues an approach to a potential collision with me on a runway I occupy, for fear that me telling him that the runway’s occupied and he’s not allowed to continue his approach might make things worse for me.
Hopefully neither of us will ever have the alternatives scrutinised after old mate spangs into us. We can safely predict what the Monday Morning Quarterbacks would say.