They moulded the CDL lights on the 'normal' mk3s, including blue/grey and executive ones, so I'd be stunned if they did two separate tools for the sleepers given they'll be inherently more limited.
The lack of decent mk2s makes the Caledonian ones a risk IMO, the Electra Vinyls look good, but using those on mk2s with a 'factory painted' mk3 will look odd IMO, and Farish aren't doing the correct mk2s for a prototypical formation. We shall see, the sample looked pretty good.