Force vertex lights on lightmapped surfaces?

Is this possible? I need a movable dynamic light and per-pixel lighting is just too expensive on older devices.

I’ve been reading around and it sounds like this was a design decision by UT. But I really need it! Is there a way to force Beast lightmapped surfaces to accept vertex lights?

Cheers!

Isn’t one of the default mobile shaders just vertex lighting with Beast lightmapping?