Riding off road on the Moser was surprisingly nice. In some ways it even felt easier than the bikes I have with fat tires, and I am trying to understand why. Possibly it is because the Moser is fast and doesn't get bogged down as much. But also, one thing I've noticed about bikes with racy geometry is that they "like to stay upright" more so than relaxed bikes. Maybe this is specific to me and my style of riding, I don't really know yet. But whatever the bike lacks in tire size it seems to make up for by recovering easily in instances where other bikes I own seem more prone to wiping out.
Maybe it is not as much about the tire size as it is about the bike itself - with certain geometries feeling more stable both on and off road? I do not understand the topic well enough to speculate. But it's interesting to discover that I do not need my 42mm tires to have fun and feel safe on dirt trails. Being able to go anywhere on one fast bike is simple and liberating.