When I did it last year I was told (I can't confirm it's true but I've been told this from a few non-official sources) that you aren't allowed to challenge the Restricted unfortunately, which is pretty stupid because the course is the EXACT same as the Non-Restricted with the addition of two extra chapters, and the written test is pretty well the exact same with the addition of a few questions about pistols.
I think when I did it, it was only 2 evenings anyway, so not a huge nuisance.