Can't say I have. Research the laptop ODM first and find out reliability problems before you do so. Research system76 as much as you can(Obviously you are trying to do so).
There have been mixed results with some Linux vendors, as long as you are doing what they expect there isnt a problem, but for instance loading a low latency setup onto it they don't expect. True with any laptop vendor, windows, mac, or linux true, just keep it in mind. Not trying to be negative, as I said I don't have experience with em, just be cautious of course.