I think I’ve hit the final balance in my Poser to Stable Diffusion workflow. The H.P. Lovecraft head, formerly too shaded and photoreal looking, now better matches the rough drawn style of the suit and body. Without getting too sketchy or losing the likeness. The lovely expressive eyes are kept. The result is 1024px and replicable.
Lovecraft hails a New York taxi-cab, or something…
As before, I should state that this was a deliberately bad pose and hands, to test the styling capabilities of SD 1.5 in Img2Img. Thumbs are obviously a problem at this level of denoising, and would ideally be artfully hidden.
The result can have colour consistency from panel to panel. It can be greyscaled, overlaid in Photoshop with a colour Poser render, and then colour-blended. The suit will thus darken down, so the crease-lines and dotted-line lapels won’t be so obvious.

