Fantastic browser, huge kudos to the author. I love it. I haven't paid for an app since I got my G1 until now. I tried xScope it for about an hour before I paid for it. I'm running it under the latest CM ROM.
I love the pin zoom: it's the best zoom system I've ever used. I love how snappy the download system is. I love the system to pull down the URL bar and notification bar. xScope's usability really stood out to me. Again, thank you to the author.
The only issue that I've run into is if I use the Home key to exit, xScope seems to lose all of my link history. To re-produce:
Visit a site. Open a link in a new tab, and notice the link change to the "visited" colour. Press the Home key to exit xScope. Return to the site. The link has reverted to the "unvisited" colour.
If I exit using the back button, it works correctly. Even if I long-press and choose the clear cache option, when I return to the page, the link shows using the "visited" colour. The "Auto clear cache on exit" option is not ticked.
It's a minor issue, and I now know how to work around it (don't exit using Home), but it was frustrating until I worked out what was going on.
I would love to be able to sync favourites with my google bookmarks, but it's hardly a show-stopper not having it.
I'd join the ranks of the "creepy comments about marrying xScope" cohort, except I'm already married, and my wife would certainly object.