Question regarding the HTC One Developer Edition Vs ATT version

The developer edition of the HTC One comes without the ATT bloatware and supposedly wont have to wait on ATT for system updates, allowing direct updates from HTC. If that's the case, would anyone be able to get the ATT version, unlock the bootloader from HTCDev website, and root with the Rom that's available for the Developer Editions?

Am I completely off on this being possible? Also I know it voids your warranty with HTC when you unlock the ATT version, but how about square trades warranty? I am asking this because I can get the HTC One at the local Costco for $159 with a $99 square trade warranty that covers everything except for theft for two years, and the more obvious reasons of not having to deal with ATT bloatware especially there horrible Contacts app.