I emailed CA Automotive about this, who said that they have a nice black/carbon E46 Sport wheel that they can adapt to fit the S50.
Apparently getting the wheel controls to work would be a massive job, and maybe not even possible, however they can make some blanking plates.
If anyone is interested I will speak to Roy at CA about a Group Buy as they are a customer of mine and I have got very good discounts previously for members
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