Main sink drain runs under the van and freezes in winter. Considering this is a winter van this is poor design. We have to disconnect the pipe and put a bucket under it to allow the sink to drain. We also had a problem with the internal water pie freezing. This pipe runs near the fridge vent and is exposed to the outside. This was solved by lagging it.
As mentioned , very easy to tow, in fact towing with our freelander I have to be careful not to break the speed limit as I forget it's there!
I believe the pre 2011 models had a cheaper window cassette and was prone to failure. Ours had a rear window leak but was fixed immediately by our dealers Flintshire Carvans who I would happily recommend.