This is a user forum, and the problem seems to be between F(x)tec and US network carriers. While it would indeed be good to read an official statement by F(x)tec on this issue, this is usually not the place they publish such things.
Of the users around here, @Hook seems to be most experienced with the Verizon compatibility problem, and their opinion (which you probably have read already) seems clear to me: No, the (original) Pro1 cannot be expected to work with that carrier. For the (future) Pro1X, we do not know yet.