Update:
Since 2015 this welcome alternative to marching up the A9 has been taking shape thanks to donations, help from volunteers and the acquiescence of most of the landowners. It's not yet the finished article but, according to the blog on the
JOGT website:
"We continue to make progress. Most of the stiles are in place, many of the bridges, and about half the markers. I hope that by the Spring 2018 walking season we will have most of the markers placed along roads in the southern part of the trail."
With luck, it'll be nearer completion by summer 2019, when I plan to be nearing the end of LEJOG. In the meantime, any reports from those who've actually walked it would be most welcome.