If you want to get wonky on IVAS this is a great listen. John Ferrari talks IVAS. An anecdote about IVAS. The "how-to shoot your rifle" in the Manual was not updated to accommodate the IVAS System. So a soldier spent some time on the range with IVAS and in a half hour figured out "how to" and the how to was not to raise the rifle to the shoulder but he couldn't miss shooting from the hip. In other words IVAS integrates RTA just like ENVG-B "shooting around corners". Talks about IVAS interchangeably with Ironvision (an Elbit System). Bit of a wrangle with the Navy as they seem more interested in a device for Maintenance and Repair like Google Glass.

 https://acquisitiontalk.com/2021/12/podcast-injecting-tech-in-todays-weapons-with-maj-gen-john-ferrari-ret/