To add my penny in the pond, I see no reason for exclusivity, either.
The carrier forums were set up that way [and I don't like it, personally] because of the tendency of many to bash & trash carriers for less than legitimate reasons.
Can't see that as being an issue here, really.
your kidding right? we don't need no good reason to trash and bash anyone....just give us a slow boring day...we'll do it right...