I don't know anyone who's got one but judging by test reports that I have read, they are of very high quality and suitable for camping in the harshest winters. Yes, they come in standard (2.30m) and king size (2.50m) widths. The fact that they are so solidly built shows in their weights which start at an MTPLM of 1500kg (most single axle models are 1600kg). They are very expensive.