To me a Jerry Can is a 5 gallon tall army type fuel can.

I don't think you could get one in a saddle bag
Others are using some type of spun aluminum type cans (much smaller than a big Jerry can). And if you are even talking about the smaller plastic jugs for gas... like you would fill your mower up with... I don't think I would unless it was a very short distance and a darn sturdy good jug.