Only non-Choiced Pursuit pokemon I have seen is SR Tyranitar, which is beaten by Lucario and therefore forced out anyways.
OU or past OU Pursuit trappers off the top of my head:
Scarf / Band / SR Tar
CB Scizor
CB Weavile
CB Lax
CB Hera
So it is kinda implied that a Choiced pokemon is using Pursuit.
OU or past OU Pursuit trappers off the top of my head:
Scarf / Band / SR Tar
CB Scizor
CB Weavile
CB Lax
CB Hera
So it is kinda implied that a Choiced pokemon is using Pursuit.