I think you're going to have to consider something considerably different to make a significant difference.
Maybe. I reckon it depends on the current weight of the Nomad, if it is like my Raven Tour and about 20 Kg, a light tourer at about 14 Kg is much easier to lift.
I find when lifting bikes it isn't so much the weight but the size and shape. My Airnimal Joey weighs in at around 12kg (Without guards and rack) it's far easier to pick up and move around than my more normal bikes.
True to a certain extent, but the Joey at 12 Kg is probably lighter than nearly all Thorn tourers.
I found weight was important when I was regularly carrying a folded Brompton. As most of my trips involving a lot of carrying were short and in urban areas I got the weight down from about 12 Kg to about 10.5 Kg by:
- getting a Brompton superlight with titanium fork and rear triangle. Downside - expensive
- fitting the lightest possible tyres (Kevlar bead Kojaks). Downsides - fragile, more expensive, more punctures
- getting rid of the hub gear and converting to the 2 speed. Downsides - not suitable for long distances, less reliable than the hub gear.
- using removable battery-powered lighting rather than dynohub and fixed lamps. Very little overall weight saving, but easier to carry because the removable lamps went in the front luggage carried in one hand and therefore reduced the weight of the bike carried by my other hand. Downsides - less reliable and needing to think about recharging.
But 1500 g of saved weight made a very noticeable difference. And, despite the compromises and expense, worth it for me, as I reckoned I had carried a folded Brompton for a total distance of between 70 and 140 kms over the several years I had that particular pattern of use.