I’ve not done any proper touring, but I took my Inbred for 3 days of Sustrans routes (quiet roads and tracks) last year around Inverness and Aberdeen.
I ride my Inbred singlespeed, so just changed the cog at the back for something road suitable (32-12 I think), put on some 1.5″ slick tyres, bolted on a pannier rack and set off. You can get away with most racks because of the way the brake is mounted, and I didn’t have any issues.
I have carbon forks up front, and had both pannier bags at the back, so it was a bit tail heavy to pick up and put on trains etc – there were a few comedy moments. Handled fine to ride though.
No photos here, but I’ll try to stick something up tonight.