The new vest variants (GL carrier rig, carrier special rig, GA Carrier GL Rig) are free content that don't require the Marksmen DLC to use.
However the hiddenselection texture files (.paa) are in the encrypted .ebo files of the Marksmen DLC.

(hiddenSelectionsTextures[] = {"\A3\Characters_F_Mark\BLUFOR\Data\carrier_gl_rig_mtp_co.paa"};) etc.

This makes it pretty much impossible to retexture the new vest models, since there is no way to get to the (original) reference textures.
It would be helpful for modders to either have access to those texture files, or at least to a reference texture, in order to retexture the awesome new vest models.