Extra rim what to do?

[Jondu]

Due to the unfortunate loosening of my calliper’s bolt at the rear I have an extra repaired rim which I want to use for a set of dirt road orientated tyres. Because it is so easy to change the back (GSA)  and not the front I would like to keep the front the same. For example I thought about a TKC in the front, which I heard is a good all-rounder with low mileage results?
???
Are there any suggestions on this matter?

 

[katana]

 

[mike m]

 

[Jondu]