I have one of each type of crafter and am wondering basically what the title implies.

For Underworld Trading, do I need to send them on metal and fabric missions or comp gift missions or does it not make a difference?

For Slicing, do I send them on slicing mat missions to get augment schems and lockbox missions for crafting missions or do they all have the same chance overall.

I have all the artifice and armstech schems, so I don't really need that info, but others might.

Thank you.