I have a Storm. I purchased the "front only" from Best Buy for $20 (ouch). I carefully applied it Friday evening before bed so as to allow the recommended time to dry.
I cut pieces of newspaper to place in the gaps on two sides of the screen to absorb the water the squeegee would push out. I did not over do the application of the liquid, and had the device off during application.
The result is very good.
One note of caution. After applying the sheet, you will most likely turn the Storm back on to "make sure it is ok". While it is still "wet", the touch sensitivity is really bad... DO NOT PANIC. After it dries, there are no problems.
This was my experience at least.