We have been using the HTC Cosmos with Enscape and wrote about it here: https://bimchapters.blogspot.c…-for-htc-vive-cosmos.html
I have had some issues with the controllers being different... seems like an easy fix? And then a recent support ticket submitted where the eye level suddenly gets aligned with the floor level and cannot be changed without closing and re-opening Enscape. This actually happened in a precious version of Enscape and it was fixed in an update, so hopefully this can be corrected soon.
Speaking of the HoloLens, we have used it in design a lot and would like to see Enscape take a crack at supporting this. Currently, the only tool I know that supports Revit textures into the HoloLens is Fuzor. Here is a blog post I wrote two years ago on our first project: https://bimchapters.blogspot.c…in-architecture-case.html