Which tires do you guys use for more touring oriented riding on these bikes? As in 80-20 ratio or similar (road/off-road).
[..]If I'm riding 70% pavement, 25% gravel and 5% trails hypothetically[..]
The problem I find is that there is very little correlation between percentage usage vs tire rating. It doesn't matter if you rode 100 kms to get to the trails - when you're in knee-deep in sand, you're 100% still going to want a dirtbike tire. When you're at max lean railing around a smooth asphalt canyon road, you're 100% going to want a Supercorsa.
So it all depends how comfortable vs compromised you want to be on the road vs dirt, not what percentage of time you'll be spending doing either. On our current tour, we are definitely 95/5, maybe even more road than that. We initially started out with Tourances, which like Anakees are 90/10 tires, but the minute the hard pack became the slightest bit gnarlier, we might as well have been running slicks. Granted this might have something to do with the weight of our luggage and where we were carrying it.
We switched to Heidenau K60s, which are supposed to be a 50/50. Sure, they are slightly more squidgier at lean in high-speed corners and they grip wet asphalt like they were coated with a mixture of armorall and snot, but for our applications, the 2% or 5% of the time that we're riding in sand, mud or volcanic ash, it's better to have that 50/50 tread than wobble around on a sport-touring tire with dual-sport pretensions.
My concern is not wanting to change the rear tire every 2-3,000km.
What you might want to consider is having a more aggressive tire up front for handling and a dual-sport tire in the rear for wear. The ADVRider guys seem to like TKC80s up front and a K60 rear. Those Heidis last an extremely long time, so you'll probably be changing the TKC and the K60 at the same time with that combination (or even the TKC first!).
Just my $0.02.