I am probably not alone here and think that semi synthetic is one for something like a V strom. Its into a very high stressed engine after all. Far better to use semi and change more often.
As for the clutch tanking you, that depends on which oil you use, if you use an oil with friction modifiers then the clutch will not thank you at all.
One of my rides is a CRF 250 X, a very highly stressed four stroke competition machine. Honda recommend fully synth for he engine and semi for the gearbox because of its wet clutch.
Stick to semi, your wallet will thank you for it.
Keith C