I spent about an hour playing with the Photon Q today. Overall a nice little phone. Up until the S3 and EVO 4G LTE came out, I always insisted on getting a phone with a physical keyboard. It was one if two top requirements. Pretty much had decided on the EVO 4G LTE or S3, but wanted to give any new phone a last chance.
The keyboard is functionally very nice, especially with 5 rows, and easy to understand special keys. The keyboard is smaller than I thought it would be, but still very useable. More useable than most virtual keyboards. Overall though I still think the EVO and S3 are much better phones in terms of display, size and smoothness and almost everything else, and I am still leaning to the non-physical keyboard phones.
The Photon Q tended to hesitate a little too much as I played with it. I had no such problem with the S3 or EVO 4G LTE. Still the Q is a very nice phone, and I am sure a lot of ppl wanting a keyboard will be very happy with it.