To deal with the variety of sporting clays setups on various ranges, I use the extended chokes with knurling that allow me to quickly change chokes without tools, keeping a pouch of the various chokes in my pocket. That way, I can customize my double gun for the setup at hand, if needed. For most clubs, you won't be changing all that often.
I shot a sporting clays setup in KY that was designed to simulate waterfowl hunting, and at some stations high passing shots were paired with incoming shots that practically dropped in my lap, so I used the odd combination of full and skeet for them.
One of the fun but challenging things about field sporting clays ranges is that anything goes, and the shots can be anything they want.
Added: As noted above, many sporting clays ranges have most shots at near to medium ranges and an IC is good enough for 90% of the shots.