Its definitely more ergonomic for the inexperienced user, but if you regularly inject yourself you don't find the existing design lacking whatsoever. I take a shot a week and its a thoughtless, effortless act at this point.<p>It is a great design, and maybe it would offer a lot of value for older people with less agile hands?<p>Cost is the other issue - I bought 200 single-use disposables for like $20 shipped. That will last me almost 4 years.
The worst can opener I've ever used was made by OXO. And their current can opener designs look like they have the same inexplicably unergonomic handle shape on the part you turn that mine did. Terrible.