I think with a well maintained and modified X5 I would try it. The clutch issue is not really an issue, just sometimes annoying. From my bike it comes and goes..!!!!!???? I found it especially happens when the bike is ridden hot. So I assume it is related to the clutch friction disc material.(?) Anyway the oil type change helped for me.

Why I would consider this bike:
a) after getting some internal info from Shineray I know that the engine is a 1 to 1 copy of the XR400. Even in their parts list the most engine parts info refers to XR400.
b) It is air/oil cooled -> simple technical solution
c) carburetor version available -> fuel supply problems easy to figure out and repair
d) powerful enough and light weight
e) (personal view) -> over 7k km with a few minor issue that never really stopped me. I rode the bike quite rough on RPMs, speed, terrain & weather conditions and it didn't fail. I dropped the bike twice in the dirt. Nothing broken, easy lift up, immediate restart.
f) in other countries might be spare supply via XR400 parts.
g) I know guys guiding foreigners through QingHai and "Tea-bed-tan" areas using X5 and JH600 for the tours. And i didn't hear about real bike problems from them.

Finally, .... the decision is up to you