Originally Posted by tdw
If your genoa is set off a furler than a staysail is a nice idea even if it only used as a storm jib. ....
A sail usable as a staysail would be too large and of too light a fabric to serve as a storm sail. A storm sail would be to small and too heavy to be of any use as a staysail.
I've not run a rig with a staysail, but I would think one might serve as the 100% jib I suggest, I'm just not sure such a sail would offer much performance utility for the cost/aggravation.