My two cats are large, one is 15lbs and the other is 18lbs (on his way to lower weight). I was hoping to find a carrier that could accommodate 35lbs total so I could put both cats in it. I have separate carriers for each of them already and am primarily interested in an easy-to-use carrier for emergency situations of the natural disaster kind. So, for example, in the event of a tornado, I'd like to coral my cats quickly into one unit so I could keep them in the tub or run downstairs to the lower level with them. I know the iGo2 carriers aren't really meant for 35lbs but in a one-time situation would they work?