I have been using Challenge Bianca Strada 36c for the past three weeks. They're a dream on the canal towpaths. I run them at 50R/40F psi and haven't had any issues which is surprising considering I weight 110kg.
The one issue is they constantly leak sealant from the seam that connects the sidewall to the main tread. I'm going to order some Muc Off sealant which apparently is thicker and less prone to leaking.