Carmack said in his talk that the vision team is doing the santa cruz stuff. He seems more focused on the current practical problems with Gear.oculus santa cruz wireless vr
the guys from tested podcast indicate the inside out cameras work in a nice static room with no one else moving between whatever landmarks the unit is using to register on. this is likely what carmack has been working on given his comments in his twitter feed over the past few years.
not sure how much battery life you can get out of the soc in the back.