Pretty negative. I ditched them because: \* they were terrible for my mental health. *To be fair,* I encountered fluency shaping in an intensive two-week residential speech therapy course (Kasseler Stottertherapie - it's a German thing), and the combination of the very unnatural speech, the fact that we were expected to use it 100% of the time and spending upwards of twelve hours of working on it, and that we were being pushed to go out and use it in public (with very negative following reactions) pretty much traumatised me; at one point I was seriously asking myself if I could learn sign language so I'd never have to talk again, which is a low point my stutter has never once brought me to. In retrospect this is a *completely nuts* way of doing speech therapy and I do not understand why I let myself get talked into it, it's possible you will have a less stressful experience if you learn fluency shaping style techniques in a more sane way... but my understanding is that the residual unnatural-sounding speech and the fact that you're expected to rewrite your whole speech pattern instead of just using techniques in the moment of blocking is a standard fluency shaping thing and that was a big part of why it did such a number on me. Having that stuff going constantly in the back of your mind is just exhausting. \* they also stopped working in a way that left me worse off than when I'd started. My stutter does this thing where it has a tendency to absorb speech therapy techniques as new secondary symptoms and/or change to "evade" them over time; the shape this took with fluency shaping meant that I ended up in this very weird place where I couldn't *say* the word but I also couldn't *stutter* the word because all the fluency shaping techniques were preventing it so sometimes I just couldn't... talk. It's given me a whole new appreciation for just going a-a-a-a-a-a-, because at least if I'm blocking there's some sort of movement happening, if I can't get my vocal cords to do anything (what fluency shaping turned into) I am just shit out of luck. So yeah, I jettisoned them with extreme prejudice and have sworn off speech therapy for life :) :)