Druidh, I read your report and it made great reading. Road riding on quiet roads is a really pleasant experience, touring is even better as you don't have work at the end of it! Avoid the A95 when you come to Speyside, its almost as miserable.
As for riding a horse to work, brilliant idea. Pure genius! If I could, I bloody well would! However I'd never subject such lovely animals to the ignorance of modern road users.
Roads were not developed for cars in the 1st instance, but for horses and carts, if it had stayed that way we'd all be better off. But thats 'progress' eh? I don't know ANYONE who enjoys driving to work. But I'm not getting into a debate about that here as I'm sitting on the internet, using a computer, preparing to ride my carbon bike to a comfortable job I wouldn't have if it wasn't for all things modern.