Switching carriers isn't the best thing in the world . With porting over numbers / getting everything to work isn't fun . So when there is an exclusive people in the us hate it because people aren't going to switch because of one phone .
Take me for example I bought my 810 unlocked and I use a prepaid plan . So I can switch to a different carrier if I wanted too. I don't switch because the coverage got better and I only play 30$ . There is no need to switch . I were to switch I would lose that plan that I have and I would have to port over my number . Since my 810 is unlocked I can take it to a different carrier but I could only use H (I think ) or worse just E( edge)
So since the m8( windows phone ) is locked to verizon . People from Verizon will benefit from this exclusive because all they would have to do is buy it sing they are set. Other people for other carriers could buy it but there is no point because all they would get is edge and H.
All in all BUY unlocked and not an exclusive. Unless coverage and speed is what you are looking buy a carrier exclusive but if you want updates and more options of accessories buy unlocked world variants ( 520*,720,820*,920*,925*1020*,1320,1520 930,630)
*these are on att so they are exclusive to att. They are locked to att
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