Only buckeye uncoupling that occurs on my layout is in two of the three platforms and an electrified carriage sidings; the third Up platform only see attachments. The magnets (Kadee no.308) being fitted uderneath the track (and can be removed /replaced from below).
This uncoupling is simply the splitting of electric trains (the CEP /EPB stock used buckeyes - it is appreciated the BIL /HAL stock didn't) and with each unit motored there is no opportunity for rolling stock to move (due to attraction from the magnets). With only three uncoupling points these are clearly defined (from approprate positioned scenic features).
Electric trains are drawn to a halt with the couplers over the magnet, thence one unit complessed against the other with uncoupling taking place!
Whilst the intermediate coupling of most SR corridor coaching sets used buckeye couplers these sets were not normally sub-divided in service. Subsequently there is no requirement to uncouple these on my layout.