Most of the guys I know have had a lightweight bundle made for audio, video, prompter and return audio to be able to record audio to camera on High end Field production. Mine is super lightweight on all wires runs from the camera to my hip where the heavy stuff connects. The bundle is no thicker than one standard BNC cable, yet it is very flexible.
2-XLRs for audio
Audio return
HD video line
HD video line, prompter or spare video
JA