I was thinking just shooting out fluid spheres with sufficient cohesion so they don't fall apart right away. But you can certainly try using PF spheres at first and, once they hit the wall, have an event that spawns the Lucid fluid spheres (maybe a few frames before impact). In the upcoming build I added support for velocities with PF geometry operator so they should be inheriting the velocity from the spheres hopefully.
Marsel Khadiyev (Software Developer, EPHERE Inc.)