A Ring of Wizardry allows the wearer to double the number of Arcane spell slots per day for the appropriate level.
Alternative Spell Source (Dragon #325) allows characters with this Feat to prepare Divine Spells as Arcane Spells and vice versa, at CL-1.
Would someone with Alternative Spell Source be able to double their Cleric spells of the appropriate level by preparing them as Arcane spells?
If so, could a Good Cleric still Spontaneously cast these slots as healing spells -- Spontaneous Casting states that the Cleric can "lose" any prepared spell that is not a Domain spell to cast a curative spell due to their proficiency with Positive energy. Would a spell such as Protection vs. Evil still be positive energy?