Do NOT install this if you want to utilize ANY mods that utilize new or replacement textures... Because they will be overwrote and overiden;; plus I can't find anyway to un-install the HD textures after installing them... I installed this pack and all my custom texture mods were broken... Disabling the HD textures in the load order or adjusting the load order and re-installing my mods did NOT fix this at all... Essentially the HD texture pack broke my customized game and I can't find a way to get rid of the damn thing or fix my mods. I was attempting to get my mystic elven armor mod working again but to no avail.

There is a workaround, disable the esps and add the bsa to the skyrim.ini, but im going to bed.

Yes, please see the thread here:

http://www.gamesas.com/topic/1343837-how-to-use-the-official-dlc-textures-mod-textures/page__p__20258438#entry20258438