i like your rig. Have been really tempted to get a 5.15 barrel, too.
I was just on the longslide forum, thinking it would be a good idea to cook up a 20L
I MAY just get a blacked LW slide, as it has the bullnose i like, and get a blacked and blind marked 5.15 barrel, giving me a mini-long slide, sans some of the weight.
Of course, money is the only thing stopping me..