i got one and use it off road.saves ringing the moby all the time.
Good for when you got no phone signal too
me and my mates travel in convoy every now and the and its great if your trying to get pictures of each others cars and stuff like that.
And it's legal to use when driving
Absolutely, there will almost always be someone on the other end of CH.9 or CH.19 if you need help. There's not always a phone signal in the more remote areas.
Again, perfectly legal to use whilst driving - big plus point.