Teflon Applique?

[badman89]

Quote from the Apple support website:
(Ref: http://support.apple.com/kb/TS1449)

If you have sweaty hands or if moisture collects on the pad, this may also confuse the trackpad. Wiping off the trackpad with a cloth or tissue usually fixes this issue. If the issue goes away when a piece of paper is put between the finger and trackpad you may want to consider purchasing a Teflon applique to fit over the pad to prevent the moisture from having direct contact with the trackpad. Before installing the Teflon applique, confirm the trackpad is clean and dry. You can use a mild glass cleaner sprayed onto the cloth, not onto the trackpad itself to clean the trackpad.

I have three questions:

1. Where can I purchase said Teflon applique?
2. Is it really useful for people who have sweaty hands like me?
3. Are there any disadvantages to using this applique? Is scrolling less smooth?

Thanks.

 

[YosemiteSam81]

I have no clue about that one. I use an Zagg Invisible Shield for my MBA and it works great. Some people don't like the slight texture but I have gotten used to it.