Thanks for this! I love Quix. One of my most frequent uses is to create Amazon Affiliate links using this bookmarklet. I don't use DEVONthink Pro as much as I once did, but the DTP bookmarklets to create Web archives, PDFs, or clippings of the current web page are also built into my custom Quix file.
BTW, I use the Gleebox extension in Chrome to access Quix.
Brett, were you able to get your ⌘1 shortcut working? It seems there's a limitation with Keyboard-fu that it cannot overwrite existing shortcuts. I had been searching for a way to get ⌘1, ⌘2, ⌘3, etc. activating my bookmarks bar bookmarks ('Add to Instapaper', 'Add to Pinboard', etc.) and thought this might do the trick. I've settled on using just 1, 2, 3, etc. instead (without the ⌘ modifier key).