Can a multiclassed Wizard enchant an arcane bonded weapon by qualifying with a second casting class?

Question

Suppose that I want to have a first-level wizard school ability, and that I took an arcane bond with a weapon. Say that for whatever reasons, I take the rest of my levels in a different casting class. Can I still magically enhance my Arcane Bond weapon without taking the Craft Magic Arms and Armor feat? Arcane Bond says:

A wizard can add additional magic abilities to his bonded object as if he has the required Item Creation Feats and if he meets the level prerequisites of the feat. For example, a wizard with a bonded dagger must be at least 5th level to add magic abilities to the dagger (see Craft Magic Arms and Armor feat).

Now, usually a wizard would do this by reaching CL5 as a wizard, but the Craft Magic Arms and Armor feat only specifies you have to be CL5 to use it. Certainly you can always magically enhance a weapon with the feat, then re-bond to it, but that's not the question. If I am a wizard 1 / witch 5 (for example), am I able to magically enhance my arcane bonded weapon, e.g. to be a +1 weapon without having the Craft Magic Arms and Armor feat? If not, why not?

Note: This is not specific to the wizard/witch combo, I'm asking about all caster combos with wizard in general.

Answer 1

Yes: Since you can use witch levels to qualify for Craft Magic Arms and Armor, your level prerequisite is satisfied, and the arcane bond allows you to count as having that feat when enhancing your fancy sword. This would also apply if you were a cleric or ranger, since the level prerequisite doesn't mention needing an arcane caster level.

Class features often read like you ought to ignore other classes when using them, but only seem like you're meant to do that. The designers could easily have issued errata and changed the wording in later printings if they cared to close off paths like this.

Answer 2

This is a Spell-Like Ability granted by the Wizard class. The Craft Magic Arms and Armor feat has a Caster Level 5 requirement. Checking the definitions:

Caster Level: A spell’s power often depends on its caster level, which for most spellcasting characters is equal to her class level in the class she’s using to cast the spell.

Spell-Like-Ability: If a character class grants a spell-like ability that is not based on an actual spell, the ability’s effective spell level is equal to the highest-level class spell the character can cast, and is cast at the class level the ability is gained.

Emphasis mine. Caster Level is dependent on the class being used; and Spell-Like Abilities that don't mimic a spell are cast at the class level the ability is gained. The ability to add enchantments cannot be said to be gained until the Wizard has enough class levels to qualify for the Craft Arms and Armor feat. IMO, this is further backed up by the fact that the cost to replace a lost or destroyed item is based on the Wizard level.