I would really go for the naked board, no on board antenna or anything. The onboard antenna is particularly trick, because it looks nice and tidy but it give a shit range, which is one of the selling points of LoRaWAN in the first place, so I wouldn't bother much, just leave it open, people can solder the antenna the want, or even a piece of wire if they only want to prototype.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I would really go for the naked board, no on board antenna or anything. The onboard antenna is particularly trick, because it looks nice and tidy but it give a shit range, which is one of the selling points of LoRaWAN in the first place, so I wouldn't bother much, just leave it open, people can solder the antenna the want, or even a piece of wire if they only want to prototype.