Hey @pnewest the Swiftype integration and other external integrations won't show up in the Webflow Design/Preview windows but will display on the published page. No need for a submit button either (it's built in).
For the "search preview", when in Swiftype, don't forget to hit the Save or publish button once you've made changes. Sometimes you have to re-add the generated code from Swiftype when you make updates to it for it to take.
Please let me know if you need any help getting a Swiftype search engine setup. They're awesome! When I've used them in the past, I just copied and pasted in the code from Swiftype into an embed element and added an additional class (pre-styled) to the input field (literally typed the class in the html within the embed).
Here if you need any assistance!