What's up with Rivers going back to the old Blue Warmoth strat copy on the last couple of shows?  Perhaps he is getting a little nostalgic?   I may be missing some but this is what I can remember River's playing on tour over the years (I'm sure in studio he has a much bigger arsenal)  Try to pick your favorite. Blue strat copy White Gibson SG Honeyburst/sunburst Gibson Les pauls  Black Gibson E…