Will most International airlines let you use one of Rick's bags as your carry-on and the Civita day bag separately as your personal item with the IPad, book etc.?
I have flown Delta, Alitalia, Air France, KLM, all with the RS 20" rolling carryon and the Civita daybag.
Yes in general. The main concern will be with budget airlines within Europe, like RyanAir, Wizz air, easy jet, etc. Some of these - not all - allow one bag only. No personal item at all.
We've used Delta, Air France, Lufthansa, and EasyJet and used the RS 20" rolling carry on and the Civita day bag or the Veloce Bag as a personal bag. EasyJet does restrict one to ONLY one carry on item, but by paying just a little bit more you can carry on two and get early boarding.
Despite what others have done, I would research, measure and weigh and then comply with the rules of the airline.
Here are some numbers for cabin luggage. Some airline also limit the size of the personal item; Wizzair makes you pay for the personal item. Some have no weight restrictions, some have weight restriction on the luggage but not the personal item and some have combined luggage & personal item weight restrictions. You really have to do your homework
Aer Lingus (EI) 21.5 x 15.5 x 9.5 22 lb
Air Canada (AC) 21.5 x 15.5 x 9.5 22 lb
Air France (AF) 21.5 x 13.75 x 9.75 26.5 lb
Alitalia (AZ) 21.5 x 13.75 x 10 17 lbss
American Airlines (AA) 22 x 14 x 9
Delta (DL) 22 x 14 x 9
KLM (KL) 21.5 x 13.5 x 10 26 lbs
Lufthansa (LH) 21.5 x 16 x 9 17 lbs
Scandinavian Airlines (SK) 22 x 16 x 9 55 17 lbs
United (UA) 22 x 14 x 9
Virgin (VX) 50 (linear) 127 (linear) 30 lbs
Wizzair 16 x 12.5 x 9.8
21.5 x 15.5 x 23