I'm sure hoping that someone responds with a "yes", but I have a feeling it's currently, "not yet".

Here's a thread from a little over a year ago:

The existing ALSA based AudioInjector driver won't work with Elk.  Someone would have to explicitly create a real-time audio driver (again I'm hoping, but not finding).

The ray of sunshine might be that ELK did it for HifiBerry:

AudioInjector could probably help their sales if they created an ELK driver for us.  Hint, hint.