You shouldnt tell him anything, you shouldnt buy a jacket with working buttonholes when you need 2 inches out. edit: I mean, unless you really feel like paying a fortune to have a competent tailor take it out at the shoulder
For those worried about the width of the amok, they stretch out a lot width wise. I couldn't wear mine more than 5 minutes because they would hurt on the sides, but after 15 wears they're my most comfortable AEs
Edit: damn phone
I have the McGraw and they're awesome. I dont have experience on the 7 lastbut got the same size in McGraw than my 5-last size and I'd say the fit is fairly similar with a tiny bit more room at the toes and a little less at the ankle (might just have to do with being a loafer tho). The toe has a very small chisel which I think looks good without being too pronounced.