I was gifted one this year and used it to till up some strips for Egyptian Wheat. I had sprayed gly 2 weeks prior to tilling and I still really had to go slow to keep the tiller from stalling out. This was ground that had not been tilled up before so it was pretty well compacted.
While it's not as easy as I had expected I'll say I'm excited to have it and will used it to till up some small plots in the future. It will certainly go faster the next time around on the ground that's been recently tilled.