Ultimately positive first experience
For Flipper Zero - Boostbabe
Foremost, the board appears to function as expected. I currently lack an antenna to connect to it, but the FZ recognizes it and the power LED on the board indicates that all is well. It did ship late, but the seller responded to an email inquiry within very short order, and made an acceptable offer to rectify the wait.
The extended wait to receive the items was the least positive factor, but it would be unfair to assign the blame in majority to the seller, as it 1.) was coming from the Netherlands, and 2.) had to contend with the holiday shipping surge. Documentation rating is a 3/5 as it came with none, but it's easy enough to visit the seller's page and get the firmware setting. All factors considered, I'm ok with the experience.
**Addendum 1**
Having received and spent some time with the FZ using a 433mHz antenna, the board so far has worked perfectly. Last step of performance verification will be using the FZ with a 2.4GHz antenna.