Default [Q] HTC one on Straight talk?

Hi,

Currently I have a droid DNA on Verizon with unlimited data, text and calls. I was grandfathered in. I really want to lower my bill monthly and want a new phone as well. I was thinking of getting either a Verizon Galaxy S4 or HTC One and trying out straight talk for a month. IF all works well, I may port my main number over. Otherwise, I would just keep the One/S4 on Verizon.

Has anyone used the HTC One from Verizon on an MVNO? I hear that all the 4G LTE phones are Unlocked out the box. Just wanted to make sure before I buy.