I don't know if you can do this with GuitarPort (I think you can with the POD and Toneport) but...
...if you find a tone you like in Amplitube but the latency is bugging you, set the tone and turn hardware monitoring back on. Set the TonePort to send the dry signal to Riffworks while you play to the Gearbox's tone. This should give you that no-latency feel and end up with an Amplitube sound on the recording...at least I think so!
