man....correct me if I'm wrong, but your use of the 2nd postion in the pentatonic is great....phrasing is spot on, and yeah, you deff know your scale structure's......ace job. I would have love to have herd a flattened fifth in there with a heavy pick attack...you know, lay some grit over the rhythm guitar, and maybe you could have dabbled with a tri tone.....
But any way you cut it, your blues chops are a-ok by me!