Despite his famous last name, Devon Allman has forged a path uniquely his own, beginning with his band, Honeytribe in 1999, then more recently, the Royal Southern Brotherhood, and his solo career. Now, hot on the heels of 2013’s Turquoise comes Allman’s finest work to date, Ragged & Dirty, an album that straddles Chicago blues with his Southern roots.  We talk his improving guitar work, touring overseas, and why he chose to cover the Spinners’ classic “I’ll Be Around.”