When to HDR

Sometimes a technique comes along which proves to be controversial and like Marmite splits the photographic opinion straight down the middle. 
Back in the day solarization was such a technique which in a club competition would get you a 20 or a 9 depending on the personal taste of the judge.
HDR (High Dynamic Range) is a way of processing a number of images to produce a final photograph with a much increased exposure range so there is more detail in the shadow areas so it doesn't block out and more detail in the highlight area so it doesn't burn out.  It does however produce an result which looks hyper real and therefore to some seems false. 
So when should you bring HDR out of the bag?  In my opinion it takes a brave photographer to try HDR on a pastoral landscape. It just jars too much for me.  The gritty feel of HDR needs a gritty subject. 
I tend to restrict it to scenes of urban decay, industrial grime or high contrast. 
When I was walking beside the Humber today past the old wooden wharves by the Albert Dock I felt that this was ideal for HDR.  Here are a couple of images.  What do you think?