T.
I don't have the Peg Perego Duette, but I do have the Peg Perego Tender Double Stroller.
It is very light weight and easy to fold and pick up. It is also easy to maneuver.
I am not sure if it is compatible with the infant car seat. When my daughter was an infant I would lay her flat, pull up the leg area and pull the shade over her. She did very well and was able to sleep, while my son rode up-front.
If you are interested, have questions or wish to see a photo feel free to email me at ____@____.com.
T.