Good point Dan,
The best procedure to insure both pilots know who is actually flying the aircraft is for pilot 1 to say, "you have the aircraft", then pilot 2 says, "I have the aircraft" and then shakes the stick! Never a good idea to add any other info with the transfer of control, like "we need to program the computer, you fly". This message can be easily misunderstood and both pilots start programming the computer and nobody is flying the aircraft!
Food for thought,
JJ