I will take the title of this forum literally (putting it on properly) and mention that only the jacket shown by Jock a couple posts above is a Blue Patrols jacket.
Which is to say, Blue Patrols isn't a general or vague notion but a specific sort of dress in the British Highland regiments (and perhaps others, I don't know) worn by Officers.
Interestingly, the blue patrol jacket isn't worn with kilts, but with trews.
The exception is certain Pipe Majors who also happen to be Officers.
Here's another photo of an actual Blue Patrols tunic

Here's Pipe Major Captain Gavin Stoddart wearing his blue patrols. Note that no waistbelt/dirk belt is worn with blue patrols, the dirk suspended by internal means.
Last edited by OC Richard; 26th May 17 at 06:12 AM.
Proud Mountaineer from the Highlands of West Virginia; son of the Revolution and Civil War; first Europeans on the Guyandotte
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