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* Unlike body fat scales, Skulpt has to have wet electrodes to function, so you have to spray the electrodes with water before testing each area.
* One reason for having so many electrodes is to pass a current along and across the muscle fibers. This allows the Skulpt to estimate "muscle quality", something that I thought was nonsense until I reviewed the available research.
* The Skulpt has to be sprayed with water before use, which is annoying. If you don't spray evenly over all the electrodes, you don't get a reading, though that's far better than getting a bad reading. I've found that spraying the sensor and applying it twice to pre-dampen the skin seems to produce more consistent results.
* Unlike scales, where you don't have to worry too much about positioning, Skulpt is quite sensitive to location. Of course, this is actually more about how you define it varies by location, so changing the Skulpt position changes how much fat it will be over. Some locations are easier to be consistent than others. For instance, it's easy to be consistent on the abdominals, as the naval can be used as a convenient landmark, where it's far harder on the quadriceps.
* Skulpt doesn't provide any indication of body weight, but by the same token, its estimate of body fat isn't dependent on body weight as an input. I think this makes Skulpt a little more reliable than body fat scales.