If you’ll allow me to make a quite large generalization, supergroups are by and large quite awful. To be fair there is some gold in those hills;  bands like CSNY, Cream and Bad Company are a testament to that fact. But any type of music where the self-aggrandizing Scott Weiland fest Velvet Revolver are considered to be one of the better acts, leaves little to be desired. This leaves us with Palms, a four piece made up of metal icons Chino Moreno of Deftones and Jeff Caxide, Aaron Harris and Bryant Clifford Meyer of ISIS. This, on paper, is a…