Arcanist and Pathfainder Savant

[Epsilon]

For 7th level Pathfidner Savant I will gain this. But I don't know how I would use it, since an arcanist is and is not a spontaneous prepared caster. Would I always have dispel magic known for the purpse of casting? Or would I convert a prepared slot and I could change that slot once I sleep again?

I am at a loss for how this would work as both seem wierd any ideas on resolving this?

Dispelling Master (Su)
Starting at 7th level, if the savant prepares and casts spells like a wizard, he can spontaneously convert any prepared spell into dispel magic or greater dispel magic as a good cleric converts prepared spells into cure spells. If he casts spells as a sorcerer, he adds dispel magic and greater dispel magic to his spells known. Every time he successfully uses either of these spells to make a targeted dispel or counterspell, he heals hit points equal to the caster level of the effect dispelled or counterspelled.

[Elicoor]

RAW you would get none (as you don't use either way of casting).

As a DM, I'd probably rule for the spontaneous conversion (which equates to having both spells always known)

[dragonhunterq]

For all* intents and purposes an Arcanist is a spontaneous caster who can alter his spells known each day.

An Arcanist cannot really be said to prepare and cast spells as a wizard.

So spontaneous conversion.

*let's say 'almost all', because while I can't think of an exception I'm sure someone will find it and point it out :)

[Epsilon]

I'm hoping paizo can possibly make an errata for arcanist and this ability. Granted right now I'm playing PFS, but I'm only going to reach level 4, but when I was reading it I figured I'd post it in the hopes it get clarified for future reference.

Although there is this line under spell casting for Arcanist.
Feats and other effects that modify the number of spells known by a spellcaster instead affect the number of spells an arcanist can prepare.

By that maybe I considered it as an always prepared spell. So extra prepared spell slots just for those spells?