I ordered mine yesterday. I have an old propane burner my keggle doesn't even fit on, I need to put a grill rack on top of it.
I thought it'd be sweet to get one, with a 15-gallon boiler maker, but I couldn't swing the $500 now. Anyways, I can still mash in my igloo tun, and just got tubing for my new setup.
I always hated using my keggle because it was so clumsy sitting on my burner. Now I can use my smaller burn to heat strike water, and just collect in my kettle.
I emailed BMW and asked if the keg would fit on it, I think they wanted to laugh at me.