Auto / Expression Separate rotobrush strokes to new layers

[graham smith]

Is there a way to quickly extract all strokelines in a roto to a new layer?

Imagine i have used ‘X’ amount of strokes to create a step by step roto of a person.

What i’d like to do is use each stroke as a matte, so i can then use various textures to each stroke. Plus then add specific FX to each layer.

Is there a expression or something that allows me to highlight the strokes and move to a new layer, or just some code that auto-creates a new layer as i go, that would be some kind of expression i guess?