I have a moderately high instep, and the 201 fits me perfectly. In the 65, I have to go up a half size in length to get the right fit. For me, a half size in width is too wide in a 65.
My Bartletts (201) are 10.5D (my brannock).
My McAllisters (65) in 10.5D are painful on my instep.
My PAs and Strands (65) are 11D.
I'll take the advice of just ordering 2 then. I was looking at balmorals and derby style which is a little more forgiving on the instep. 9E fits well for me on Strands and McAllisters so I think I'll go 9E & 9D. Seeing the shannon drive go on clearance makes me regret not getting the suede neumok....