Question Rendering SkinnedMeshRenderer with additional pass on top of default Lit shader

I'm not very familiar with URP and its shaders yet, and am just wondering what the easiest way to achieve this effect is.

Basically, I have a SkinnedMeshRenderer that I want to render as normal at all times using the URP/Lit shader. In addition, I have an additional pass which would be an unlit "aura" effect overlaid on top of it.

My first instinct was to create a Shader Graph, but there's no nice base to start from that has all the übershader nodes. Am I best off just duplicating the Lit shader file and writing my own pass (and foregoing the custom editor), or is there an easier way that I could just draw the mesh again but with a different material?

Thanks in advance!