Jacket conversions...some thoughts.

[TheOfficialBren]

It does, indeed, look like Lord Lovat's jacket has been converted. There is something about the bottom seam near the pocket. Either way, Look at that snazzy tweed! HM has a really neat getup, too. Isn't that called a "Prince of Wales" check? I had trousers in that pattern moons ago.

I'd wear a converted jacket or a specifically designed jacket without batting an eye. Simple needs.
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I get the impression that the fictional Glenbogle House isn't so unrealistic. Maybe that's why some chiefs no longer live in their castles.