Nope, haven't seen them either, thank you! Super Cargomaster included! Hell yeah! I am already thinking about my "imaginary" feeder cargo operations, with potential routes, hubs, etc. Truly, this aircraft was the missing link. We already have large cargo aircraft, many different types (777, A300, 727, 737, MD11, etc.) we have all kinds of passenger and GA aircraft, but this kind of cargo ops was not entirely possible realistically (the PA12 or the Kodiak are sort of in this league yet not entirely), unless a lot of "imagining" was also imvolved.
The Caravan will be the first such dedicated aircraft, purpose-built for this kind of ops. Of course, not limited to cargo, although I will use it 80% cargo, 20% pax ops, probably. The hype is real!