Nope, not interesting at all, especially at such price. This is sold as an ANTIGLARE protection filter meaning the optical properties are most certainly crap. This is even more likely because there is absolutely not a single accurate reference to the said optical properties (haze, transmission, reflection levels ...), only vague promises.I think circular was the one that has a visible seam. Didn't appear to be an option. Tried the linear one.
Even if one has to come up with their own way to mount it, this one might be interesting -- http://www.kantek.com/p-LCD24W/c-10...y-Filter---Fits-121-Widescreen-Notebooks.html