Think the opposite
A lot of fashion bibles recommend that you always stick to a tailor's speciality or area of expertise. Generally speaking that means that British tailors should focus on making heavy flannel suits and tweed jackets while Italian tailors keep to suits from light wool and linen. We disagree. Some amazing pieces have been made by tailors who've ventured outside their assigned fields – from Brits making linen summer suits or cashmere overcoats to Italians making unlined, soft structured tweed jackets.
Colin Firth in a sharp suit by Cheshire Bespoke.