Can't say I recall ever seeing the salesmen in Nordstrom wearing what are obviously MTM or bespoke suits. Many were well dressed, in suits and ties - better than the general public - but not quite at the level you've described.
You should go to the main site for Herring Shoes and do a search. You'll find a few shoes that are very similar in style, though admittedly, not quite as cheap as those since those are on sale. If you spend at least $150 GBP, you can use this code to get 10% off ANDY10
To give a good idea of fit, you should take the picture directly facing the camera and one from the side. Keep hands out of pockets and down at your side. These pictures don't show clearly, but the jacket does appear to be too long.
I have only used Silverline Thomas Mason for my shirts and they've never had a stretching issue. However, the most recent of these is at least three years old so I can't comment on any of the recent offerings. I have a Goldline shirt being made right now and I'll see if the sleeves stay consistent in length after a few washing.