Metal Allegiance, the supergroup featuring Alex Skolnick (Testament), Mike Portnoy (Dream Theater), David Ellefson (ex-Megadeth), and Mark Menghi, will be performing at the House Of Blues in Anaheim, CA on January 22. The concert will find the band joined by Chuck Billy (Testament), John Bush (Armored Saint, ex-Anthrax), Doc Coyle (God Forbid, ex-Bad Wolves), William…