Until last year we had to do a raw data single engine ILS every 6 months during the usual check, however since then training has changed and we don't have to do it anymore, it wasn't any regulatory requirement anyway. Raw data non precision approaches are not done at all, however "raw data" became easier with the new fangled IAN thingy which presents any kind of approach the same as an ILS. Personally i try to fly raw data approaches as often as i can, however i have to take care not to overload my captains so it does depend on the situation.