Nice Southwolds, I have these in burgundy too.
Out of 11 pairs of E.G's I currently have in my collection, these get by far the most attention/compliments.
Mine are very light though, slightly too pinkish for my liking. I have tried to darken them with various different Saphir products (Renovator, Bordeaux and Mahogany cream, dito colored wax), they have only slightly darkened after say 30 polishes with mainly Renovator and cream.
I really like the darkness of yours, curious how you where able to get them to their current shade and color.
Renovateur is a conditioner and cleaner, thus it has the effect (in my experience) of lightening, rather than darkening antiquing.
My EGs in Burgundy tend to get lighter unless I polish with black. If you want them as dark as aportnoy's, sticking with burgundy or mahogany polish is not likely to be sufficient. Obviously leathers vary in color and sunlight has an effect blah blah blah.