[SixOfSpades]

I see the Harpers as a mix of Good and Neutral motives. To explain, let me compare them to the Shadow Thief and Vampire guilds.

Bodhi and her Vampires represent a powerful extreme of Evil that is capable of taking over the entire city. The Harpers would naturally fight to utterly annihilate such a guild, as even a single Vampire could quickly vampirize dozens of other people to repopulate the guild all over again.

The Shadow Thieves are another strongly Evil force (walk into any Guildhall and Detect Evil to see for yourself) that has essentially already taken over the city in that they operate almost without interference from the guards--and it's rumored that the Shadowmaster sits on the Council of Six. Now, while the Harpers in the Galvarey Estate say that they would like to see the Shadow Thieves weakened, they would not want to see them destroyed.

I believe that the Harpers' opinion of the Cowled Wizards would be the same as their view of the Shadow Thieves, and so yes, they would sponsor the PC's trip to Spellhold. Whether the player wants to look on this as a 'Good' path or a 'Neutral' path is up to the individual (perhaps the Harper quests could include branching tasks: You can choose to do the Good or the Neutral alternative).