What's in a Staff?

[Inziladun]

Originally Posted by Andsigil

Perhaps Saruman invested much of his own power into his staff in order to increase his strength, much like Sauron did with the One Ring. Both beings were Maiar, after all.

Sauron's motives for endowing the Ring with much his native power were fairly singular though: he had to make it exceptionally strong, so that it could control the other Rings of Power.
I don't see Saruman having any incentive to follow suit, especially since he was so well versed in ring-lore that he likely knew just how vulnerable Sauron had made himself by dividing his power.