have a 6 (or 7?) year old Janome Jem and it goes to class with me as well as on airplanes and to retreat. It has never caused me a problem and I love that all my Janome feet fit both it and my bigger Janome. Weight is about 10 lbs.
Also, I kept the molded Styrofoam packing and carved channels, to accommodate the housing for my carry-on suitcase's pull handle, into the piece that fits the front of the machine. That way, when we are flying, the front of the machine is totally protected from bumps and dings.