Tasteful that Lorier is.That's nice. No way that is the original strap. The buckle looks a little chunky to match as well but the chances of getting one original must be extremely slim - it is from a period where everyone wore their watches. The original strap was probably ruined by sweat within a couple of years.
I'm currently drawn to the Lorier Astra. They do mid-century inspired stuff - I really like the balance of tool and dress features. Similar to the Smiths I have I suppose.