I know what ND does and I only mentioned ND for not using smaller apertures.
How is CL-180 going to help freeze action and let you bring down ambient at the same time. Please someone post one shot to prove this. I will happily send $10 to buy them lunch.
We all know as you increase ss, power is going to go down on CL-180. You guys showed it in your CL-180 thread. You can use that strobe for fill fine not over power full day sun.Here Einstein at full power with Kacey dish. See I can barely match sun as light is far from the subject than just a head shot. ND filter used only to let me shoot at f2.8 instead of f11.

Good Stuff

