I am with Beags on this one..well to an extent anyway.
I got to my new (foreign) unit and was given my kit...including a new DNC. Ahh I thought....I can put this in my Nav Bag and it'll stay there..how wrong I was. We are expected to do all pre-flight planning using it, be IFR or VFR. 'Twas a shock..I hadn't practised with it for yonks, and now wouldn't be without it....I use it to prove the GPS right these days!