As far as I understand the rules you can Hold a Touch spell as long as you dont cast Spells. As Supernatural Abilities do not case as Spells, the Touch attack shouldnt disappear, should it?
To be more precise: I'm playing a witch and want to store a touch Spell (Chill Touch) on my familiar but continue using Hexes, while my Familiar attacks with Chill Touch every turn.
According to the books:
If a witch is 3rd level or higher, her familiar can deliver touch spells or hexes for her. If the witch and the familiar are in contact at the time the witch casts a touch spell, she can designate her familiar as the “toucher.” The familiar can then deliver the touch spell just as the witch would. As usual, if the witch casts another spell before the touch is delivered, the touch spell dissipates. If the witch activates a hex, her familiar can be used to make the touch. She does not have to be in contact with the familiar to use this ability.
Holding the Charge: If you don't discharge the spell in the round when you cast the spell, you can hold the charge indefinitely. You can continue to make touch attacks round after round. If you touch anything or anyone while holding a charge, even unintentionally, the spell discharges.If you cast another spell, the touch spell dissipates....
And hexes count as Supernatural therefore:
Using a supernatural ability is usually a standard action (unless defined otherwise by the ability's description). Its use cannot be disrupted, does not require concentration, and does not provoke attacks of opportunity.
Could this work or am I completely misled?