Interesting post. For me, the instep on the PA wasn't borderline too low, it was plain too low. After wearing them forever, they did finally break in. I found that for 65-lasted balmorals, they almost always rub the tops of my feet raw until they finally are "good to go." Loafers are a royal pain in the you know what for me. Much harder to get a good fit. I have tried on a ton of loafers from AE, and the Patriot if one of the slim few that worked really well - going with my same 65-last size, they just plain worked. Great fit, roomy toebox (but similar to the 65 last fit). Only difference was the heel fit was quite narrow. But awesome overall. Hope they continue this last for some time.
FYI - I also found that the Presidio worked, but not as well.