I conducted the very first simple test, using the generic wifi scan examples from the ESP32 package in Arduino and choosing the board "u-blox NINA W10 Series (ESP32)"...

I did not find my other serial adapter which has the correct layout but this one works as well with some cables. Otherwise the programmer would stick with the snapfit pcb socket perfectly without soldering any headers/sockets and it does work quite well with just holding the dupont cables as the housings press it against each other like in a row connector.