I am writing this review from this BT keyboard, which has just arrived in the post. Firstly I should mention that I am not using it with the Touchpad for which it was designed, I am using it with a Samsung Galaxy S2. It is working well, although certain features do not work perfectly, such as shift for letter capitalisation. I can appreciate that this is because the product is designed for a HP tablet. Some of the keys are especially designed for the tablet as well, making them function strangely.
However, I cannot fault the product design. It is slim and well made. It is also small and therefore easy to transport with the device you want to pair it to.
As I say, this product functions a little stranglely with the phone, though it sure beats using the touch screen over longer periods of writing and is far better priced than any of the full size bt keyboards.