Before trying the e-bow I experienced the violin bow. It must be said that it would be very limited only because the radius of neck guitars. With e-bow, a colleague lent me, that's another thing: endless sustain, relatively easy handling. You still have to tame it because it is held at the beginning is tricky especially if one uses the fingers to play. It is true that there are creative possibilities of egg but be careful not to abuse the beast because it can quickly become boring and tiring the audience. So use sparingly, preferably with modulations type chorus and phaser. Two sounds are available: flute and violin, it is very acute attention regarding arpeggios is not obvious because when we ask the e-bow on the string, it is a time delay.
What about price? Expensive for what it is above all that we do not use it every day. There are other similar systems in particular, but Fernandes is more expensive and not practical.
So to try and think before embarking on the purchase.