Aha, I would say they are Eurasian. For Asian, I was more thinking about the south Asian Subcontinent and hence long-billed vulture Gyps indicus, slender-billed vulture Gyps tenuirostris, white-headed vulture Gyps bengalensis and as a huge rarity red-headed vulture Sarcogyps calvus. Hence an essentially pan-European and Asian vulture do not come into it....
I would prefer for both vulture species to have their own breeding aviary. I do not think that 2 large territorial vulture species like the cinereous vulture and lappet-faced vulture will not thrive well, let alone get to some desired and good breeding results!