Absolutely. My writing position has my wrists about 4 inches above my legs. And my elbows are supported by the arm rests on the chair and my wrists by a gel pad.
This graphic actually implies that the ideal is even lower..and that the keyboard should be tilted away from you (mine is dead level)..
...
:shrug: Best solution is to just get a proper simming chair..
You basically get the same effect without a tray when you raise your chair enough, but to each his own, I guess.
(Also sitting rather uncomfortably after a while has the advantage of taking breaks more often - except when you're so immersed that nothing can pull you away.)