Ryanair when I was there used the monitored approach for ILS vis <1 km or Ceiling <300’ aal for precision and 3 km/1000’ aal for non precision and all CAT II/III approaches. Worked very well.
I am on balance a fan. As a long haul pilot it means you are involved in the operation on every sector. As a short haul pilot it can creat oddities at places like INN and GIB but in general I’m pretty happy with it. I was very grateful landing off it in 1500m/OVC003 today.