Starting soon, you just might be able to do that. Google OS spotted a new addition to the Chromium browser: an about:labs page. Load it up, and you'll see experimental browser features which you can enable -- like side tabs on Windows and tab expose on Mac.
At least, very soon you'll be able to turn the features on via this page. Right now, it's not functional. Clicking enable on tabs on the left didn't actually activate the feature for me -- I still had to add the --enable-vertical-tabs switch to my shortcut.
The addition of about:labs is a nice touch, and will allow more users to kick the tires on cutting-edge features. That, of course, is a good thing for Google. A larger group of testers should allow them to tackle bugs more quickly and push features from the dev and canary builds to the beta and stable channels even more quickly.
Jennifer Love Hewitt