RE: Just a precaution, or over prepared?
The biggest chance fer failure is in the scope. Havin' iron sights an' a allen wrench can pull yer fat outta the fire quicker 'an Hormel chili thru a vegetarian. Other'n that, I carry a timber carbine 'long with my scoped '06. Thet not only gives you a backup, but also some variety.
BJ