Modo is a subdivision surface modeler, but that doesn't mean it doesn't provide a path for spline patching, lofting and extruding via curves! And if you are going to use curves, why not drive the Cadillac of curves, the Bezier curve. AKA the "B-Spline". This modo 103 tutorial shows you how to model with bezier curves. Bezier curves will also work in newer version of modo.