Form follows function.
I think the Land Rover analogy sums it up.
My 531, 700c tourer is like a Jaguar Estate, pretty quick, handles well, can carry a fair bit of stuff but isn't a Ferrari.
My Raven Tour is more of a Land Rover Discovery, it can do all the above but can carry a bit more and has some ability on rough tracks. It can be equipped with more serious off-road tyres if required.
The Land Rover Defender is more akin to my MTB.
Long Steerer tubes, IN MY OPINION, are incredibly useful on a touring bike. See the many "Where can I put my computer" discussions on forums. Long Steerers allow the addition of accessory bars.
Also. it's not a level playing field, I see many Quill stems raised to their maximum setting, nobody seems to say anything about them.
If you look at some of the Reviews on the Thorn website, you will see many photos of people riding 26" bikes of several types. I think they look rugged, purposeful and not odd.
Riding my 1.5" tyres over rough roads convinces me more that..."I don't care what it looks like, it feels like a magic carpet".
On top of that you can send it back after 3 months if you decide your bum looks big in it.