You think the swingarm could last, and not worn out, if you would change plastic chainguide when it was worn out?
Did you had any issues with rear sprocket hub freeplay in the wheelbearings? Did you have to change it alot? What about rear hub rubber? I found these parts are weak point on Tenere.
By now (18 000 kilometres I already changed several whealbearings in rear sprocket hub. I had changed (in warranty) rear hub, because bearing socket got too much freeplay. And I had changed the sprocket hub rubbers.
Now at 18 000 km I will soon have to change rubber and bearings again.
( But I do qiute some offroading)