Yes, great monorail for use with lightweight lenses.I've combined the camera with my collection of the lightest lenses I have--100mm WF Ektar, 150mm G-Claron, 180mm Fujinon-A, 203mm Ektar, 270mm Tele-Arton (not light but the lightest decent telephoto at that end of the range)--and three grafmatics. I don't carry all that at once, but it can make a super light 4x5 setup.
My lens kit for that camera consists of four lenses: Schneider 47mm Super-Angulon, 80mm Super-Symmar, 150mm APO-Sironar-S, and 300mm Nikkor-M.
Wished that there would be also a 4x5" digital back to go with!