What are the tyre sizes?
I've just switched but for the last 8 years I've been using a Hinckley Bonneville. A bike this shape worked for Ted Simon in 1973, so why not today when there is more tarmac. The key though is tyres (and I aren't saying this because I'm selling some
). GS style semi-knobblies means that if you wake up to rain halfway down that forest track in Finland you might be late for dinner at the next place, while semi-slick road tyres mean cooking moss on the petrol stove and praying for sun.
The other downside is the damage you can do. Over the years I've bought 3 pairs of silencers and at least one pair of indicators. Again, not sure how the Divi will land, but if you can buy the obvious bits from people who want to turn petrol into noise faster, all the better.
This treatment does trash the bike. I sold to a dealer who'll scrap it and knew the value, so I have no bad feelings. If breaking the frame would do more than ruin your trip you will be better off slowing down on the road sections and knowing the lanes won't break it.