I just got the yr2 Peregrine Greaves from a 3oC during Iron Banner.
Was planning to use them as infusion (I main Warlock) but when I check the Titan blueprints they don't show as available... Yes, I equipped them on my Titan already.
-
Its a glitch. Bungie's looking into it.
-
I also purchased the helm from Xur, and it gave me the blueprints for that already.