I went apeshit and spent $500 on this a few months ago and it has been like relearning to walk. I got it because my shoulders are so wide I feel like a t-rex holding a thimble with both hands when I use regular keyboards and this has totally reversed a lot of stupid pain so bonus for that. If you can stick with it it's really worth it.
But holy shit without flashing very custom setups early this fucker will try to kill you. Do not use their recommended default. You'll activate 15 ridiculous functions and layers just trying to type op is a fag and it'll never stop raping your productivity unless you remap 90% of it.