I have a very similar leather flip for my i-pod.. and Im well pleased with them as they both look smart and give good protection to the device... which is why I wanted that sort of thing for my phone.
>>> ,I opted for one of these instead
That looks cool - love the colour

(im a purple freak!)
I'd personally decided against the gel cases 'cause the dont protect the screen.. and since I shove my phone in my bag, along with keys and various other stuff, the flip works better for me..
...and I dont know if they were unlucky, but I knew someone who had a gel case for his HTC-desire HD, but after a short while it soon stretched and kept falling off. Maybe it was just a 'bad one' but he ended up buying a flip in the end. I just hope this one is similar to that for my ipod, as that looks smart and can easily clip back out of the way when the device is in use.