I purposely chose BR over McCoy - I'm based in NYC and McCoy is easily available from a number of retailers. I actually prefer the more 'mottled' appearance of the BR knit, that was my reason for choosing it. Also, having tried on some variations of the RMcC sweats, I didn't like the boxy fit - having read the description of the BR on HPA, I thought the revised fit would be more suitable.
Just for clarity, the BR arrived today. It looks fantastic with a tucked in shirt/shorter oxfords and trousers that are worn closer to the waste. It's slightly too short to wear with longer cut oxfords (e.g. Thom Browne) and trousers I tend to wear lower on the hips (e.g. short rise jeans).