Yes, almost instantly after the command to do something is sent to the VDIP it will respond.
So you need to be ready to receive.

I am wondering about the direct copy from one device to another the more I think about it. The VDIP will send data all at once but you have to tell the VDIP how much data it is to receive. So you will somehow have to figure that part out.

Maybe there is a built in copy command with the VDIP?