of course you can give them any armor you like and they will wear it but
followers do not benefit(get better numbers) from such enchants as fortify one-handed/two handed/archery , (anything) regen , or reduce(any magic) costs for instance. followers only benefit from fortify health/stamina/magicka, resist fire/frost/shock/magic, fortify light/heavy armor, muffle, fortify unarmed , fortify carry weight , and waterbreathing . this info available widely ( i learned from wiki) but not whether dead thralls are the same. i guess the only way to know would be to test it on a pc like they have with followers