Dynamical MCMC samples of the GJ 1148 two-planet system allowing for mutual inclinations. Red samples represent the configurations which survived 10 Myr without disrupting the system. The MCMC samples peak at Δi ~ 30°, where most of the stable solutions are found. A second smaller peak of stable solutions appears at Δi ~ 150° (i.e., retrograde configuration). Near polar configurations are dynamically unstable due to strong Lidov-Kozai effects.