Re: iPhone instead?
If it's just quick sketch type of stuff anything with a big enough screen should do as high quality drawing of Sammy stylus solution is not needed for most uses.
Have you tried one? You can draw schematics and annotate them with values on a Samsung Note phone. You cant do that on the competition. I believe it is a combination of high-res digitiser, and the stylus providing pressure data, but what would I know, I have only used it.
As for using pencil and paper, sure, but with the Note, you have it in digital form, and can dump it to LTO tape for archiving. Probably not useful for a one man carpenter, but if you have 1,000 engineers in the field, its a very different proposition.
It is very nice to be able to send a photo of the circuit to a colleague, and have him sketch the required changes, and send it back - especially if you can do this while on public transport (eg while waiting for a train, not in a bus going over speed bumps :-).
Biting the hand that feeds IT
