Does the RS Civita fit under the seat in front of you? Traveling USAirways to France, decent sized plane.
I believe the Civita is the bag that used to be included when a tour was booked a few years ago. We traveled with these as carry-ons on Air France in 2011 and on Lufthansa in 2012. Last year we traveled on Swiss Air / Lufthansa for the Eastern France Tour with a slightly larger bag from Eastern Mountain Supply that was 8 x 11 x 19, the Civita is listed as 14 x 11 x 5.5. We had no problems with any trip we took with either bag. Two of these trips also included smaller planes on connecting flights within Europe. The link to the EMS bag is:
http://www.ems.com/product/index.jsp?productId=13070619&lmdn=Brand&cp=18811696.4058660
And yes, We stowed them under the seat on all the planes not in the overhead.
Yes, my husband always carries his on and stows it under the seat.
It depends on how much you stuff into it. It seems to have magical storage properties and occasionally I have to put it in the overhead bin.
If not overstuffed, this bag is roughly 2 reams of legal-sized paper (including the little 'half-pocket' on the front). On my Ameican Airlines airplanes, I could get 2-3 Civitas under the seat.
Using the picture as a guide, you can judge the size by the 16oz or 1/2L water bottle in the side pocket. Note that this model bag is as stuffed as it could possibly be! Mine have been very full, but never looked like this! This is definitely what I consider a 'day bag' size, not a small backpack (as main luggage). And it's very soft, so it will fit wherever the contents of the bag will allow.
It won't quite fit vertically on my airplanes; my 12" bags can be squished to fit upright.