Need Clarification on Changing GCs

[Beckett]

Edit: I'm wrong!

Several people have complained about this achievement's wording being misleading. "Guide any of the three Grand Companies to a total of 100 Seal Rock campaign victories." actually means guide any one of the three GCs to 100 victories. You cannot do 50 on Mael and 50 on Adder, it has to be 100 wins on one GC. If you were to switch now, you would need to get 100 new victories to get the Coat.

I don't know if you would keep your Mael victory record if you were to switch to a different GC and then switch back to Mael, but it would not surprise me if it reset each time you switched.