Not really, but there are caveats though.
First the glow fuel plastic jug may dissolve with model diesel fuel in it.So you need to test it first. Say pour in some gasoline and let it sit of a few days and see if it melts on you.
Next the plastic jugs tend to be more fragile than metal containers. I have had plastic jugs start to leak along the bottom seam or mold marks on them.
Then the plastic cap jugs may or may not seal as well as the metal capped cans. So you need to check that more carefully. You sometimes see this at the hobby shop too where a plastic jug has sprung a leak on the shelf.
But if the plastic jug holds up OK and doesn't melt and seals well, then yeah you can use it.

The problem is the ether doesn't want to stay in the container, it wants to evaporate and get out. So it is hard to keep it in.

another thread on it here:   http://www.rcgroups.com/forums/showthread.php?t=1226065