It already has a push point for the thumb why would I need more than that?
You can cut things with a $30 cold steel knife, why would you need more than that?
It's not about needs - it's about fun, form, and function. Flippers are fun, and, also, I find them to be a little safer than thumbstuds. Flippers act as finger guards when the knife is open, allow you to open the blade without any potential of slipping your finger onto the blade, keeps you from putting fingerprints on the blade (which, if left uncleaned, can lead to staining in some uncoated steels), and it really is just
fun as all hell.
I used to dabble lightly in flippers, but, as time has gone on, I've come to appreciate them more and more. They present a challenge to the maker to create a fluid but fast flipper action, and most companies that can pull that off tend to excel elsewhere as well.
Kershaw/Kai and Hogue make the best production flippers I've ever used. Spyderco makes some damned fine ones, and the general consensus is that Benchmade's first foray into the flipper market was a little underwhelming.
But, that's production. I'm anxiously waiting for this to show up in my mailbox:
[video=youtube;7AIgCfY3QM0]http://www.youtube.com/watch?v=7AIgCfY3QM0[/video]
Edit: Well, not exactly that. Mine has a harpoon grind blade and silver twill inserts instead of moonglow.