By the term keyswitching, do you mean using a Launchpad as a keyboard for performance mode? This is entirely possible, just send the MIDI notes that the Launcpad sends to a MIDI track in Cubase. And yes, if you want to remap the notes it sends, this is entirely possible with Bome MIDI Translator Pro.
Steve Caldwell
Bome Customer Care
Also available for paid consulting services: bome@sniz.biz