Now this idea: fusion intercooler has a lot of merit!
This would be a great solution for say, a rear-mount turbo where airflow limitations or stealth concerns would limit the efficiency an air:air intercooler or packaging or weight concerns would rule out a water:air charge cooler.
It would be really cool to use this as hybrid system too, where it could buffer a small capacity air:water IC or use an air:water IC to return it back to solid while off-boost.
It's got the gears turning... :D