By disaster I meant loosing the opportunity to fish. A rod, or rods, in a sock on the side of a pack are pretty frail. If you took a fall, set the pack down on it's side, would be great opportunity to break a rod.
Seems like carrying a backup rod would be more of a hassle to pack than the few ounces an aluminum rod tube would cost you.
To each his own. I never really worry about weight unless I am going for three nights or longer.
jasonkelkins at yahoo dot com