I've been discussing Gordon Clark and Vincent Cheung on the Bible Thumping Wingnut Facebook page. Our discussion has been primarily epistemology. I think if Cheung follows Clark's necessitarianism then sense pecerception is necessary to occasion God ordaining a direct causal connection between any given cause and effect. One clear problem with Occassionalism is it presupposes continuous creation which entails there is no single ontological personal identity through out time. Each thing, including any given person, is recreated at each moment in time.
If I were a Clarkian I'd much prefer pre-established harmony than Occasionalism 😜