Sigil of Wisdom, and Sigil of Power
I just got the Quest to Collect 10 Sigils of Power and 10 Sigils of Wisdom from the Black Prince. Wondering if I can do LFR to get these items or if I need to do normal version of the raids to get them.
UPDATE: 11/5/2012 (Patch 5.0)
I have been doing Mogu'shan Vaults on LFR, and it seems that Mogu'shan Vaults only drops Sigils of Power. My guess is that the other raids will drop drop the Sigils of Wisdom. I will know more on Tuesday when Heart of Fear Part 1 is open for LFR
Yes, both the Sigils of Power and Wisdom are obtainable from LFR, as is the follow-up quest item and all of the Sha-Touched Weaponry that tie into the Legendary quest. This is by design, as Blizzard feels that all people who raid (at the LFR level or better) should be able to see the quest line, as well as increasing the "value" of said quest lines (as everyone can do them, not one specific class a la Fangs of the Father).
Note that when they do drop, all raiders on that step of the quest get the Sigil - there is no competition for it, as in past legendaries. This is true on all raiding difficulties, as well.