[kallistisoft]

Very much depends on what you're trying to do... In my case I wanted to examine the raw traffic between two devices that I had written software for and had full control over. I found it worked just fine as the debug version of the code doesn't implement any of the ble security features. Also had no issues using the dongle to examine ble 5.x traffic.

[Bouncingsoul1]

Yes thats true, but even if I have access to the device firmware, which I usually do, so I can build an unecrpyted version and this usually leads to the problem not being reproducible or showing differently... Anyway I want to reproduce the problem as close to production fw as possible. So via our time/effort calculation, spending some money on a multichannel sniffer was surely worth it.