Recently, I was invited for a media-lunch-tasting-type-thingy in Philly with the affably hippie-ish-appearing Greg Morthole, who has been making wines for the Davis Bynum label since 2010. Davis Bynum wa purchased by Rodney Strong in 2007, and before that was a bit of a Sonoma-area legend, based on its eponymous founder. That Davis Bynum (who…