Have lost patience with them. Puncture riding home on Friday; different tube in on Sunday, puncture on the way to work today. The tube I put in had come from the deid Peacemaker, which also has Twin Rails on and I noticed there were already 4 patches on there.
Love the CX tyres I have on t'other bike, so I think I'm going to get the same set and play about with the guards for clearance (should work). The aesthetic of the amber sidewall will be lost, but on a daily commuter in Edinburgh the general grime takes care of that anyway.