No this logo will never fall off, its part of one of the metal inserts. They do not want you ever taking the back inserts apart. I can see the edge of carbon by the logo possibly getting damaged over time, but its near back of barrel which almost never gets roughed up. Side where logo sticks out does not have any carbon edge exposed. Mine could be a slightly defective one and its very early in their production runs. If you go to a store it might be smart to look at several.
Aside from the logo issue, I do feel it is worth the 150. I would rather pay 130 personally, but they did put alot of design process into it, much more than your average barrel. Keep in mind 3 materials were used and this clearly is targeted as a luxury best of best barrel.