I did a double split for a while and really enjoyed it. Fuel prices and time restraints have stopped this style of workout for the time being. I basically did two pwo shakes after each workout.
I did notice my afternoon workout lacked the POP of the first workout. Pumps weren't as good, focus, energy, etc.
I have been entertaining a double-split routine for my next cycle.
I currently have 1.5g KA & 50g of Whey for pre-workout and 1.5g KA, 10g BCAA's with glutamine, 60g of WM all in water and then 50g of whey 20 minutes later for my PWO.