As for the country stuff on OES...
I've been thinking about Dusty's point about Setting Me Up on the first record. It's a fair point - it's country/country rock song. And yes, Mark uses chicken pickin' and so on. Still, Setting Me Up is just such an awesome song - great riff, catchy lyrics, cool groove, fantastic soloing - and it does not feel typical of those early albums. It is more of an outlier. (Six Blade Knife is bluesy, but mostly the early songs are neither blues nor country).
With OES, and the tour, there is a different vibe that comes across in several of the songs, no doubt reflecting Mark's leaning in that direction more generally. The last DS song is How Long, and it's fine and everything, but still... It does seem a bit odd. And in that sense I think Alan is right.