levi
Still fresh, damnit!
I tend to agree with Shenmue on this one. The Psion S5 is wider than the Pandora, but the front corner of the keyboard is much slimmer (especially when slid out by the lid). That enables you to use more of your thumb to reach in to the center and even across the keyboard. I suspect a design like Fusion_Power's with the angled edges might achieve a similar result, making it easier to launch more of your thumb over the keyboard without feeling lose losing hold. But of course, there's no way to find out without prototyping. Who's got sellotape, cardboard, blu-tack and a youtube account?