Joss tortured Spuffy shippers for two and a half seasons and Bander shippers will most likely get the same treatment.

Oh undoubtedly.

As for 'shipper wars in the X-Menverse - I expect there are, especially now because of the movies, but I don't follow the books any more, so I have no idea.

Should imagine there are diehard Scott/Jean 'shippers who loathe Scott's current love and Jean's flirtation with Wolverine the way B/A 'shippers hate Spike and Cordy, though.