OC, tell your man to move that plaid, so we can see his collar and lapels more clearly! While the two positions are not quite compatible enough to work both ways, any jacket can (theoretically) be buttoned with the collar standing or unbuttoned, with the collar laid flat. The best way to see this is with a pajama shirt, which has relatively little inner facing, or with an "unconstructed" jacket.

This is the kind of thing Ted Crocker knows about.

Over time, tailors have made subtle adjustments that keep us from buttoning our sportcoats up to the neck or from flipping back the stiff military collar to form lapels, but the potential is there. How and why did mainstream highland tailoring abandon the lapelled single breasted doublet with Inverness skirts? You've got me there.

What has this to do with Teufel Hunden's Montrose? Maybe nothing, maybe a lot...If I might hijack this thread just a little further, we might solicit images of 18th and 19th century coats, jackets, and doublets, so that TH can evaluate other options for his cravat...