I picked up a pair of size 11 D Kenwood loafers a few weeks ago. I am normally a size 11.5 D in Strands, but had to downsize for the Kenwood. I had to do the same for the pair of Waldens I recently purchased as well.
Great shoe, comfortable out of the box and breaking in nicely.
I've had a different experience. I take 8D in the 5 last (Strand), yet have the Kenwood in in 8.5D. The 8D in a Kenwood was painfully tight. Probably should have gotten an 8E in the Kenwood. I also have the Maxfield in 8D. I think the Kenwood is a very narrow fit for myself.