Detail
Warcraft Tavern states Permanence has 2 ranks, reaching +100% to class raid/party buffs and +50% to camp-rest benefits at max rank (implying +50%/+25% per rank). Icy Veins states Rank 1 alone already gives +50% to BOTH class buffs and camp benefits, which would put 2 ranks at +100%/+100%, not Tavern's +100%/+50% - the two sources disagree on the camp-benefit scaling specifically.