AFAICT, Wellenreiter has limited functionality (some functions are not available).
But it does detect available networks, which is all I need.
Here's my network setup:
1- Wireless - MINE ... which is encrypted and will only connect to my network
2- Wireless - OTHER ... which will connect to any unencrypted network
3- Wireless - Sniffer ... set up per Cresho's instructions.
If Wellenreiter discovers an unencrypted network, I just stop the sniffer, close the connection and exit Wellenreiter.
Then I just load my browser and connect with OTHER.
And away I go.