Gree Air conditioning

Has anyone installed the gree shark 3.5kw A/C unit?

We go to Spain a lot. I have an 8m van currently fitted with a domestic 2200. It works ok but is too small for the van. 
I met with a Dutch caravan owner who had the Gree shark. It was very impressive it kept his van down to 18 degrees on a 6 amp supply. It seemed to be very quiet.

the dometic is very annoying at night as it cycles, my understanding is the gree has a night mode as it is substantially quieter than the dometic on paper it seems to be a good buy.

has anyone else had one fitted?