I have the feeleng, that makers of p2p software do not sleep and they have got solutions to bypass Mikrotik p2p trnsfer limits.
Right now I am investigating BitComet 0.68 modded. Is has mysterious featue: "protocol encryption" ( apart from random port).
I have the feeling, that this programm can bypass p2p trafic limit, but I will do more testing.
What do You think about it ?