(This is from Stewart's wife Vicki, for full disclosure.) I bought a Hide-Away last year, and used it on 7 weeks' travel in Europe as my plane carry-on and then every-day carry-around. Found it too big for the everydayness, but main thing is that its seams started pulling apart and the fabric itself developed myriad pulls - I stopped counting at 50 - weakening the whole shebang. Didn't overstuff/stress the seams. Disappointing, for sure. I would not trust it for checking.
My extremely satisfactory day bag for the past 5 months at home/1 month in Europe/2 wks US road trip, is a Lite Gear product. Husband's using the backpack version, me the diagonally-strapped. Maybe they make larger sizes?