I think the 2.3 DHR2 is a really great tyre, and I’m certainly not going to take it off the front when heading to rocky places. I just personally think that when riding rocks all the time it’s even better to have more tyre volume and ideally even tougher sidewalls. And that tread pattern isn’t as critical (the DHR2’s is awesome) but that compound matters a lot – DHR2 3C is great (but probably won’t last forever on the back).
So if they did a 2.5 DHR2 that would be even more awesome. But right now I’d probably put Trail King 2.4 Protection on a dedicated rock riding bike – huge volume, excellent compound, tough sidewalls and Apex pinch flat protection.