I agree with you, Ben – a charming prototype. IMO they do strive to produce a high quality product. They do offer “drop-in” EM & P4 wheelsets for their diesel models – I would find this a much more tempting proposition if they would offer the same here, saving a lot of work? Their product announcement : https://www.accurascale.com/blogs/news/jump-for-joy-as-first-j67-8-9-samples-arrive
Their Siphon G is reviewed in MRJ 298, now on sale, and they’ve just announced a BR 16T mineral, which should be v.popular.