OK, now I've been using it for about 20 minutes, time for a second review.
(some of these might be answered by different settings which I have not seen yet)
When opening new tabs - sometimes it will open at the far right (like Firefox), sometimes it will open just to the right of the open tab (like IE). One or the other would be OK - but not both. (prefer to always open to the far right like Firefox)
UGH - wow, a lot of sites have ads that I never use to see.... since I used AdBlocker Plus for Firefox.... again something that will probable come in time to fix.
As for wetware issues - I haven't seen it any slower. I have a couple of my own websites which takes a bit of time to load - and seemed to load about as quickly as firefox does it. I use bookmarks rarely, so that is not an issue for me. (but sure there will be a bookmark plug-in that will appear soon.)
AND GUESS WHAT - I can easily drag and make this input box bigger and smaller with no extra plug-in's installed. COOL!!!!!