I got a HTC Desire HD from Vodafone but it didn't come with any kind of sleeve or case - and the gigantic screen looked a bit vulnerable to scratching or worse, so I bought one of these.
It's quite a swish sleeve/pouch, nice leather smell (for a few weeks anyway) and the ribbon pull-tab is neat and works well. The inside is some sort of lint-free velvet material that you don't mind rubbing against your nice HD screen, though it doesn't actually perform any sort of cleaning function - you want a glasses cleaning cloth for that.
When I first bought this, it was a good snug fit for my HD. However after a few months of usage it's not quite such a snug fit and my phone has fallen out once or twice recently, and has some superficial damage to one corner as a result. It would be a good addition if there was some kind of velcro tab at the top to "lock" the device into the pouch to prevent it slipping out (which it will do quite easily after you've used it for a while).
Other than that, it's a handy and elegant product, good value for money, and I would recommend it (but not really if you want maximum protection for your HD, or if like me you can be a bit clumsy!)