For me, Peter Capaldi feels like the Jon Pertwee to Matt Smiths Patrick Troughton. Whereas the Second and Eleventh Doctors were both bumbling clowns on the outside (with great depth and heroism within) I can see the Twelfth being another Third Doctor; refined, reserved and probably not without an element of superiority in his character. Peter Capaldi is another Scot like David Tennant and it would be interesting to see if he keeps any of his native tone in his voice. Personally I dont think it matters either way. Peter Capaldi is incredibly pronounced and well spoken and suggests a deep intelligence and wisdom, mixed with real life experience. A lot will come down to the Twelfth Doctors costume but Peter Capaldi seems the first Doctor in a long time that could carry off the cravat and velvet of Pertwees Third. Im not suggesting an outfit to similar each Doctor needs their own style, but I can see a Doctor that is debonair and well dressed, as classy as his character.