If you have TSO-C129/TSO-C196 GPS gear (vs TSO-C145/146 WAAS/SBAS gear), you either have to have a non-GPS approach at your destination, or a non-GPS approach at your alternate. If your choices are either conventional approaches or GPS-only approaches, this is simple to understand.
However, some approaches have arisen that are hybrid approaches -- combining GPS intermediate guidance with a ground based navaid (usually an ILS) for the final approach course guidance. An example of this can be found at Jackson Hole, WY, where the KJAC ILS Z or LOC/DME RWY 19 approach is listed as "GPS REQUIRED" on the approach plate due to the use of GPS to set up a curved feeder leg onto the ILS final, bypassing some terrain to the north of the airport and allowing much lower minimums as a result.
Are these "hybrid" approaches considered the same as a GPS-only approach for alternate planning if you are TSO-C129/TSO-C196 equipped? Or are they considered as conventional approaches for alternate planning purposes?