Sleazy Fork is available in English.
Can work on almost any webcomic/manga page, preloads 5 or more pages ahead (or behind), navigates via ajax for instant-page-change, lets you use the keyboard, remembers your progress, and it's relatively easy to add new sites
< Commentaires sur Webcomic Reader
You're right, I'll try to put something together to update the updater. Either way, Greasemonkey and Tampermonkey already include built-in auto-update
A new update checker?
This script still finds updates from userscripts.org but the server never responses right?