Author of the program here. This is definitely something that is worth while considering, although I'm not too sure if a correlation always exists between the audio and picture patterns (e.g. in a music video, scene transitions may not be exactly synchronized with the audio).

I've also seen people combine the cuts detected by PySceneDetect with subtitle (.srt) information to generate a more comprehensive list of scenes, which are sets of shots joined together by some context (to allow for jumping forward to a particular scene by it's description).