I am - I think it should work in principle, but would be difficult to pull off in practice.
Lots of stuff to stop it from working effectively (spray patterns, droplet size, volume, contact area, muck on the intercoolers) especially on a home brewed system.
There are "better" things to spray on your intercooler (if the end tanks of the stock intercoolers can take it, Robdon had good results from a NOS spray but you're not going to homebrew one of those), and there are better places to squirt water at/into (water injection).