Thanks for posting. I haven't tried it, but a couple of questions. When the saved search window pops up, is the cursor active in the search window?
No. I sort of explain that in the instructions. It's not a completely equal substitute, but it requires no hacking, and because I find tabbing through multiple search criteria controls rather cumbersome anyway, I consider it a fairly robust workaround.
Do the two name contains criteria boxes muck up the search and are both required?
No, it works fine with a single text field, I just provided an example with two, which I find useful. Neither affects results of the other if left empty, I think. I'm using it with QuicKeys, so I've replaced the default entirely.
This workaround incorporates a GUI scripting strategy that is useful for selecting menu items that are hard to get at. I use different implementations to launch VPN and Character Viewer, for example, with a Services keyboard shortcut. None requires QuicKeys, it's only needed to workaround the hard-wired system shortcuts such as Finder's command-f.