Switching in the config is a hardware settings being changed in the software. The device itself does not provide 3 separte DirectShow video streams, so anything other than a cut is impossible. I'd also doubt it would be able to manage a clean cut without glitching, as i doubt the card does vertical interval switching and syncs up the inputs in the card.
You are correct about being three separate streams but wrong about it being a clean cut....it is as quick as any other cut on wirecast or VB. its pretty wild....for me right now while i am waiting to make a decision on what card to buy BM Quad or osprey 440 it will switch from three different cameras....I have one cam that is on a 1394 firewire card and i go the that cam and while i am on that cam i can switch the cam in the osprey 100 filter. Then i can switch back to that same module. All three cams connected to that osprey work fine. Not the right way to do it but it does work.
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