Some people who prefer gravel to paved roads may not have a “road” bike. Those people may benefit from two sets of tires, like DrIsotope mentions. I have neighborhood “paved” roads that gravel is dumped on regularly, to provide cars more traction during winters. I have a set of WTB NANOs 700x40C which I prefer for forest roads in GA MTNs.

I have a set of 28mm tires that I may run on the neighborhood roads. I bought the 28mm tires thinking I might do some commuting. I may swap back to a more typical Cyclocross tire 32-33mm once I wear out the 28mm tires. Trying to decide if I want to spend the money for tubless rims for the smaller tires.

I wonder if guys running two sets of tires, swap out their Cassettes and discs, or buy extra ones?