I use it in my home studio for multitrack recording of band rehearsals.
I am very happy with the function, the integration in X32, and the workflow.
The only negative part is that you cannot ffwd/rew the playback, you have to set markers where you want to go.
EDIT: It was apparently always possible by rotating "Add Marker" (not very obvious), but only when stopped. In the latest FW (4.x) it is also possible to scrub, that is, to fast forward while listening.
If you need more than 2x32GiB (approx 3.3h@32ch@48kHz) you can use larger SD-cards, but that is officially not supported. So only use larger cards if the recording is not essential.
Note: When importing the files into your DAW, they are a multi-track wav, and needs to be exploded/split. This may take quite some time. So if post-production time is limited, this is not your solution.