Switching facial features programmatically?

[shibekin69]

I'm thinking of using Spine's bones to position and switch out pre-made facial parts:

• Left eyebrow
• Right eyebrow
• Left eye
• Right eye
• Nose
• Mouth

How should I go about it here? Do I use skins, or is there a way to set attachments? And since this is the face we're talking about, what if I want to programmatically switch out my faces during playback of different animations?