Am I correct is saying Engine has replaced hbatch, and I can set up multiple Engine licenses on our farm to run simulations? We're looking to set up 2-3 HoudiniFx licenses, I would rather not tie those up with sims. We could set up Hqueue to manage sims, but we'd rather use our current render queue manager Rush.

Any info is greatly appreciated.

Yes Engine is a replacement for batch licenses.

It also enables you to run Engine plug-ins.