Well, he's from Canada, but I suspect getting a work visa wouldn't be a problem.
Frankly I'd love to see Devy again -- although he has toured with DTB since his ProgPower USA appearance, DTB has not played Atlanta since then. I'd even toss some money Shane's way for it. There is no question in my mind that he's a musical genius and a fascinating, if sometimes tortured soul.
--But I remember getting into verbal scuffles on the Forum over Devy's last appearance at PPUSA, how poorly it went over, etc. Since then he's opened for Symphony X and appeared on an Ayreon CD, so...who knows?