Passing on
very swiftly.........................
Yes, thanks Dan, that's a very interesting viewpoint, i.e. you've been there done it, as it were.
It looks like if want a sexy looking, feature-laden device, it's a factory-fit, should it outlive the package (or the user!).
Although I have seen the 600 etc.. series has , um, been DIY'd successfully, but I don't know if the 3/650 range has been "fettled" in this way - yet.
I suspect getting the battery might be a stumbling block ?