I believe your comments about US width are incorrect. All EG widths are done the same. A 9/9.5D is the same as an EG 9D (UK). If you look at the box, the last is labeled, for example, D82. Last D82 is the same whether they are US or UK.
I think that Rebel's statement is generally correct. However, I believe the EG for RLPL shoes on the 89 last are an exception. I believe that those shoes on the 89 last that are marked a D fitting are actually a UK E fitting. I say that based on personal experience and having read alot of comments - particularly this thread.
Both the Falkirk and the Walcott sold to me! One for casual and one for dress. These will be my first EG and I hope they live up to their name and are actually better than my handgrade C&J. A dangerous thread indeed.