...The first Portenzo had an elastic band that was tight enough to securely hold the Targus stylus. The second Portenzo was a little looser and I've got to make sure that the clip on the stylus clips onto the elastic. In both cases, the problem I had with the setup was the clip on the stylus. While the stylus itself is fairly skinny, the clip adds some extra width to it and makes it where the cover of the Portenzo doesn't close flat (it sticks up just a tiny bit right at the binding of the case. The width of the stylus slot isn't big enough to handle they stylus clip being rotated any direction to where it would all fit flush together either. I'd suspect that you would have the same type of issue with the Bamboo Stylus. The Alupen looks like it would work out though, since it doesn't have the clip.