I saw a thread on a polish forum about someone crafting up such a lens, but I can't seem to dig up the link for it nor can I find any dealer to source them. But iirc it looks awesome.
I've only seen the C8 compatible Magicshine lens, but none any smaller than that.
EDIT: I read S2 and wide angle lens and automatically assumed it was for a triple build. Not sure if there is a single emitter elliptical optic? Otherwise what about diffusion film?
Carclo 10510 for a wide angle elliptical beam (very wide but also narrow)
Thanks, I perused through the Carclo catalogue and found the 10192, which might fit the bill for a single emitter setup. Unfortunately LED Supply doesn't have any, but Mouser does!
Diffusion film on the other hand sounds interesting since I haven't considered that yet.