I think the fit is great - I bought 2 jackets from Lawrence Covell in Denver (www.lawrencecovell.com) one of the first few stores to carry it  - one was an unconstructed tweed jacket which does run a little shorter/trimmer and is unlined - very cool I think (I wear with jeans and work boots, knit tie, etc.)  - and then I got this killer smoking jacket (dark tartan plaid with shawl lapel). This was a little more of a classic fit but not stodgy. I've worn both a lot. Eidos...