In general, one can swap in custom outer shells for controllers if one has a particular look in mind; there are stores that sell these.
In the case of the Steam Controller 2, Valve published the CAD files for the outer shell to actively try to encourage this, so I imagine that there will be replacement outer shells.
In general, one can swap in custom outer shells for controllers if one has a particular look in mind; there are stores that sell these.
In the case of the Steam Controller 2, Valve published the CAD files for the outer shell to actively try to encourage this, so I imagine that there will be replacement outer shells.