The switch shown and listed is indeed for a Panasonic EVQ-P0E07K, except the Gladius II has a slightly differently designed switch. In the screenshots of the guide we can see the Panasonic EVQ-P0E07K has a little horizontal bar that sticks up out of the switch... but the stock OEM Gladius II has a flat-top circular button switch that rises out of the frame. The problem with this is that the round peg sticking out of the right-side of the mouse wheel runs the length of this 'bar' and it may be prone to slipping out from under the round peg with this type of a switch.
I haven't taken enough of my mouse apart yet but if I can find the proper switch number to match the OEM part, I'll post it here if possible. You might want to re-view the part information as well @cassisbonbon