I can use a pick, but palm muting is super awkward for me, and something I only occasionally work at. The way my fingers automatically deaden the fatter strings when I play the thinner ones makes for cleaner sounds to me. Plus finger playing gives me a fatter tone. That said, I frequently use a pick when playing quietly and working out parts or coming up with new ideas. I feel a different groove when using a pick. Plus, these big “Thumper” picked keep the sound fat:
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…only disadvantage is when they warm up they soften up a little…