that seems right and if it is im pissed..HOW CAN YOU ONLY HAVE ONE ARMOR SKILL!!!!!!!!!!!!!..
i didn't wanna believe it when you posted it but i looked around to and im pretty sure your right but im hoping your wrong..
Armour is a passive skill. You are not required to do anything but take damage to improve it. Also, realistically, there is little skill involved in wearing armour. There is some skill to moving about succesfully, but once you are used to it, that's about it, not a truly great advantage for a TES game, and IMO not worthy of any skill at all. You can't be better at surviving strikes because of your skill in wearing armour.
EDIT: And multiple armour skills is particularly ridiculous. So if you are good at wearing heavy bulky armour, you may still svck at easier, lighter armour?