Its especially slower because you need to access the chrome, and have this bookmarked however once you're there you have tons of options.

1) You can easily change the useragent string (a tiny bit)
2) You can have multiple profiles, and manage them
3) You actually easily see the useragent string without characters like %20

ABP solves the chrome issue with a JS overlay icon on the bottom right which points to chrome://adblockplus/content/config.html

But hey... I'm not changing my user agent... got no need for it