DOH!!!!!! just testing your level of observation
oil pressure switch is a 10 mmthread so all you have to do would be source a switch of the same thread and wire into an after market clock digital or analogue and mount it- some switches incorparate a connection to the oil pressure warning light as well- simple enough job if you can source the right bits and bobs--i guess knowing what the oil pressure should be may limit what clocks you could use- but just measured the oil pressure guage in my audi coupe and guess what -its the same size as the oil temp guage on the ducati!!dont know about the switch tho