Can you provide a link to the "gorilla glass" products?
I originally tried one dealer mentioned here, but apparently they don't ship to the states and didn't return my e-mail.
I prefer real glass to any type of plastic since, in the end, plastic collects small scratches and goes from glossy to matte in wear areas. Glass can scratch, but is much more resistant than plastic, and "gorilla glass" is quite strong, though a strong blow will shatter glass (and one that strong will probably transfer to the LCD window and break it as well). I think any protector is mainly for scratch protection.
That's the reason, I turned to Expert Shield products which are available through Amazon in the US and elsewhere. They do not include the small window protector (at the time I purchased mine), but that window is not as exposed to damage and sees far less wear than the main LCD panel o I'm not too worried about it.
Expert Shield offers plastic as well as glass (in many sizes, but the K-1 specifically) but their glass protector is not advertised as "gorilla glass", hence my beginning question (I believe real "gorilla glass" is a glass product).
http://www.expertshield.com if anyone needs more info. Just Google it and the Amazon link will pop up.