By "informed guess" one usually means a genuine guess (not a quasi-guess with a hint of secret information), which is informed by one's research or general acquaintance with a given topic/person/etc. Knowing GG's tendencies and heaving read many interviews, etc., it seems to me that, in general, he prefers to use analogue pedals if possible, and hence I think he won't stick with FX8. And that's my guess. So, please keep your sarcasm to yourself; I was just trying to have a civilised discourse.