The con is that they have metal hubs and could unwind mid-flight. Some people use them, but it's not recommended.
Yes, the P3 has active braking which is why the P3 props have a composit hub; reduces the chance of a prop spinning off.But is there any more risk of that using them on the P3 than there was on the P2?
Yeah, I know, props are on order won't have them until Tuesday. If a dare and it fails, I will post here. If it works I won't post at all.For the price of props. Is it worth the risk?