Mine was second hand, so already had a screen protector/silicone case supplied.
The Desire HD's size makes me paranoid about it being in pockets/handbag so I bought a Proporta leather case (aluminium lined)..now £10 cheaper than I bought if for, from ebay. £19.49 now. You can still squeeze it in there with the silicone case on.
Proporta do it as a case or a pouch (I bought the case).