Shame about the spacing issue, out of curiosity, how large is your device?
We actually prefer to use the right slide gesture for a space, the added bonus being that then you can disable the space bar in the settings and save even more screen space.
After you've used it for a few days, I'd love to get your impressions. You can get in touch with me at xavier@whirlscape.com if you're interested in sending any thoughts.