Infosyncworld.com has an indepth review of the HP iPAQ hw6515 Pocket PC Phone. They have some good things to say about the device, but they were not impressed with the internal camera or the battery life.
"Ridding itself of the bulky design of its predecessor, the hw6515 comes across as a far more elegant - and pocketable - device than the hw6300 series despite the fact that HP has managed integrate a thumbboard. At 118 x 71 x 21 mm and 165 g, it won't make your suit pocket look like you're carrying a couple of decks of cards - and the front doesn't look cluttered despite the large number of elements residing there. "
"Ridding itself of the bulky design of its predecessor, the hw6515 comes across as a far more elegant - and pocketable - device than the hw6300 series despite the fact that HP has managed integrate a thumbboard. At 118 x 71 x 21 mm and 165 g, it won't make your suit pocket look like you're carrying a couple of decks of cards - and the front doesn't look cluttered despite the large number of elements residing there. "