Will the "long-fingernail effect" hinder iPhone texters?

Over on another blog I do (I get around) I have been parsing the results of a survey of 20 iPhone testers conducted by user experience consulting firm User Centric.

Testers were asked to execute multiple text messages, both on their personal cell phones as well as on the iPhone.

One factoid in the survey results might be cause for a bit of a discussion here:

One female participant tried to interact with the iPhone keypad using her fingernail and was unsuccessful.

At first read this sounds kind of silly. But when you think about it, perhaps not.

News Flash #1: Teenage girls text somethin' fierce. Walk through any mall or down any street with shops and you see them tapping away ( when they aren't yakkin' away).

News Flash #2: Teenage girls often wear long fingernails. I don't have any numbers to document this, but I would guess a relatively healthy percentage of teenage girls - and not just a few older females as well- do have fingernail extensions. Or whatever it is that they are called.

OK, let's put all this together. When long-fingernailed girls text on standard cell phones with on-device keypads, I'd think their fingernails could actually be helpful. The narrow endings could almost function as stylus-like devices that could easily navigate through the keypad and type out those mission-critical tomes.

But as you know, iPhone's keypad is a virtual one, on the device itself. Since the fingernailed tester had trouble using iPhone's virtual keypad to text, is this a harbinger of trouble for millions of teen (and older) texters who may wind up with an iPhone soon?