I go up both half a number size and from D to E from my shoes on the Barrie last to my Leydon last suede chukkas. Going up just half a number size without also increasing the width was not comfortable to me.
I just got back from a trip for work and was greeted by pair of the tan unlined chukkas. Sized up a half size from barrie and they are way too narrow for me.
Not sure if I should try to send them back and get a wider width, or just go with the barrie from Tom.
Also I think the steel shank is looks since there's a weird clicking sometimes when I walk.
Shoemart will be getting my pair of 11.5Ds back today - I am requesting an exchange for 12Ds. Hopefully that will work... if not, back again for 12Es.
I would have just gone ahead with Tom's Barrie last in 11D instead, but he didn't have any in that size.