I do this, but I've been doing it for most of my photo life, not just for a month.
I've been shooting with the same SLR for over ten years now and I've got three lenses. I've had other ancillary cameras (Holgas, Polaroid, pinhole etc) but the SLR does my 'serious' stuff, I've never owned two or more camera systems.
I'm an avid fan of Bengt Björkbom's blog and he once quoted Christer Strömholm saying "one camera, one lens, one film, one developer", Bengt came down in favour of a Leica with a 35mm and presumably Tri-x.
I've been fascinated by that statement of Strömholm's and have increasingly found the need to confront it. I've always admired those who create great photos with the minimal amount of fuss about gear, but getting there is an uphill battle for me. A battle against material and mental clutter as well as sore shoulders from lugging around too much stuff.