The twill is running /// NOT \\\ (which is consistent with the 'face' of Lochcarron's Strome)
Wow, I hope I'm not the only one who was confused by that!

This is a picture of a portion of my Strome kilt (exact same tartan as Slowburn's), and the twill seems to be running opposite from what you stated... unless I misunderstood what you said.

(The tuck selvedge is easily recognizable in this pic.)