Whats the real trade-off when swapping a road bike setup for a more gravel-oriented configuration, specifically in terms of efficiency and speed loss, versus the potential gains in comfort and control off-pavement? Does the claimed versatility of gravel bikes often come at the cost of compromised performance on smoother surfaces, and if so, are the benefits of added tire clearance, stronger wheels, and increased durability worth the slight weight penalty and aerodynamic inefficiencies? Is it possible to find a balance that satisfies both on- and off-road riding, without sacrificing too much in either direction?