User blog comment:DarkSaiyanMitsubi/How to do you start the quest "Recover the Bonemold Formula" ?/@comment-4057437-20121210034455

When we did it, we first recovered his Ancient Nordic Pickaxe. Then he asked about the formula. Once both quests were completed, he gave us the key to his house and its basement, which had a unique set of Thieves Guild armor (the Blackgard's Armor) and some other goodies in it. We used the basement as a temporary base until we got Severin Manor.

He didn't give us any other armor besides that.