I’ve got an old Cannondale frame that came with the Headshok so the frame has the same headtube as the Prophets.
When I swapped my Headshok out for some 1 1/8th forks, I used one of those Cane Creek Double XC headsets that you mention. tbh, it was absolute garbage. Bearings didn’t last very long at all and iirc, replacements were very expensive (seem to think around £30 a pair).
After replacing a couple of times I got some Marzocchi reducer cups so I could use a standard headset. Had a hope in there for a good few years now.
If I was to start again, I’d be looking at what Hope can do.