There's more than one Savior's Hide. Unlock a lot of the artifacts it isn't one single item. When a mortal has done something to win Hircine's favor, & offers him the skin of a suitably impressive kill he creates a Cuirass of Savior's Hide out of it.
There's a reason it has looked completely different every time it shows up.
It still isn't supposed to be a whole set of armor, just a top.
...on the other hand, if your female character wears it to the alchemy table, you'll see that it is, in fact, just a top.
