Yes fitted one as a DIY project.
It was very easy, the only difficult part is having the courage to bore a 42mm [ or something like] hole in the roof.
Honestly cant remember if I used any extra sealant, it was in about 2002.
They are exceptionally good coming from the Status 350 ? round job.
I used a "proper" domestic aerial on a tube from the jockey because the fitted aerial was so poor, but the Status is so much less hassle than the proper job and something less to find room for.
Worth the money; well for me yes but everyone has their own idea of value so nobody can answer that for you.
No problems with it at all, but then I had a first rate operative fitting it!
Cheers John