Well, as written, the Advantages on the left side build Savagery until there's enough to let you use the Primals on the right side. So far I have not had a fight last long enough to build enough Savagery that I could use any Primals. But I have not had any problems using the Advantages, and the bars work exactly the same in the default UI as in Profit.
The appearance of the paw means that the Warder has found a weakness and you can use Advantages. The paw does NOT mean that you have gained enough Savagery to use a Primal.
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