Lots of people use those camping sets to good effect.
Careful with the terminology, though: Freeview is the Digital Terrestrial TV system (through an aerial) and the available Channels are not 100% the same as on Digital Satellite.
Furthermore, Freesat (which is probably what you meant!) is basically a system using a branded Receiver that pulls together certain Free Satellite TV Channels with a full EPG etc (similar to Sky).
What you're proposing to buy is a Free To Air Receiver and although you'll get all the Freesat Channels and more, there is only Now and Next Programme Information.
The bonus is they can be used for "foreign" Satellites too (Well, a few) and you can do things like Rename/Renumber/Group/Delete/sort Channels to your heart's content.