I liked both 11 and 10. 9 seemed extraordinarily lazy. 10 was a combination of contemporary hipster quirks, with an incongruous awareness of colour for a hipster twit (ever notice the way the Chucks were different Auth each suit, including black and white ones with Black Tie?) Then there was the impeccable overcoat, that demonstrated he knew just wharves he was doing, and the oddness was a conscious, informed choice.
11 had a great tweed, and he was young but wearing "old fashioned" things like tapered trousers, suspenders/braces and a bow tie. I liked the tweed, but I found the purple was more in keeping with the spirit of the character, especially the way Matt interpreted him.