Why on earth would you put it in Kaer Morhen? A level 14 armour in a place most people don't get to until level 20-25, and it's the most iconic Geralt look to boot. So people will have to rush the main story even -beyond- the Isle of Mists, the point where the game specifically tells you that you're reaching a crucial point in the story, just to look like an actual witcher?
This was a poor decision. I'll be waiting until there are mods to reskin the Griffin armour to look like the Wolven armour or something before my second playthrough.