Hi Nick,

The real answer to the overall question is - it depends on how much you use your phone and how often you find yourself in a place where you can access a wall outlet. It won't take long to find the answers to those two variables and you don't have to go on a long tour to learn.

I have found restaurants, including some fast food places will usually allow me to plug in my electronics if I am also buying something. Doing that might mean you would spend more time in such a place than otherwise but it doesn't sound as though your tour is one involving speed or particularly high mileage days. I say that because true "stealth camping" usually takes more time than wild camping or permitted camping, although when you are stealthing it you often get a pretty early start. In addition to restaurants I have found other places that will let me plug in when I need to - bike shops, campgrounds that I pass but am not staying at, office supply stores, municipal offices, tourist/welcome centers, etc. Sometimes you can access an outside plug without even asking. I have done that at a high school parking lot and at many campgrounds at the covered pavillion.

Be aware that there exists batteries such as this

http://www.amazon.com/10000mAh-Smart...=anker+battery

which you can use to charge your phone. Obviously that battery has to be charged, too, but it will extend the time you can go between using wall outlets and by definition, if you don't get the hub you will have to access wall outlets from time to time and you can often charge two devices at once. I even carry a plug with 3 outlets so that I can take full advantage of an outlet when I find one.

Also, keep in mind that using a dyno-hub to charge a portable electronic device is a relatively new and not entirely perfected process. Some phones won't charge directly from the dyno because they require a minimum current that they dyno does not achieve. In such case you need to charge a battery (perhaps like the one I referenced) in order to charge your phone anyway.

Finally, I have no quibble with what you propose at all, but high tech electronics and low tech stealth camping are not really made for each other and this is one of the ways they do not go together nice. I suspect lots of tech users stay in motels and don't worry at all about finding juice, but I am not one of those. I love my SON dyno hubs but I don't use them for charging my electronics. I use wall outlets, the portable battery above and a solar charge from Goal Zero

http://www.goalzero.com/p/79/guide-10-plus-solar-kit

which I just strap onto the top of my tent and sleeping bag which are carried on the rear rack and ride down the road.

Bottom line - there is much more involved in this decision than just money and several ways in which the desired end can be achieved. There are also tech issues to be considered.

Good luck