My personal perspective is that two types of meditation are useful for lucid dreaming/OBE. Single-point meditation is what you need to develop to pierce the veil between physical awareness and NPR; it teaches you to silence all the noise from the physical awareness state, to reduce the signal-to-noise ratio as RVers like to call it. Mindfulness meditation teaches you what is useful once you have achieved the NPR mental state; it will open your awareness to your surroundings in a mindful way to keep you focused and connected to the NPR condition and allow for longer LDs/OBEs.