Can Hololens 2 "chunnels" be used for mounting third party hardware?

Question

Hi, For a project at our company, we intend to mount a Vive tracker to the front of a HoloLens 2 and are looking for ways to do this non-permanently and in the least invasive way. In the documentation on the Learn platform, I found a reference to 'chunnels', which are slot-like cavities that go all the way through the front of the headset and seem to serve no function (see attached images). Are these intended to be used to mount hardware or do they have another function that is not immediately clear? In the case that they can be used for mounting, is there official documentation available for the Hololens 2 in the form of CAD files or other reference material? I have found examples of hobbyists using these chunnels for attaching cameras, but we want to make sure we are not interfering with the headset or damaging client's devices by doing this. I look forward to your reply, thanks for your help! Kind regards, Joris