I guess I'll take a stab at this...parts of it anyway.
"At least it would be more difficult to match or strategically position two moving sticks against two moving sticks simultaneously."
It's not much more difficult, but then again i get to train with guro . One thing training with Guro Crafty has helped me with is being able to recognize different fighting structures. Just like there are structures with single stick and empty hand, there are several structures a double stick fighter may use. However, these become more difficult to discern depending on how active one is at snake range. That said a person can only have their sticks in so many places, both on their right side, both on their left, one on each side, both above, etc. After recognizing this, it is a matter of finding an applicable technique...
"Do you guys have double stick “Attacking Blocks” drills?"
I feel that Guro Crafty's Los Triques Siniwali has similar elements found in the attacking blocks. I also feel that Krabi Krabong helps cultivate an attacking blocks mentality.
Brian Jung...aka C-pornstar