There is no such beast as the perfect SAR helicopter, every design will have a number of compromises. The 101 is a fantastic long range, (almost) all weather platform with a big cabin and a very useful FCS/autopilot combination. The BERP blade design gives a lot of performance benefits but increased downwash from the 'paddle' tips is the sacrifice. Not such a problem when winching over a large vessel at sea but definitely an issue when small vessels or crag-fast climbers are the customer. Clearly, the Norwegians have identified that the former is more likely to be of concern.
An interesting feature of the downwash is the 'doughnut' pattern of turbulence that is produced. It's very fierce towards the extremities but remarkably calm in the middle. If the wind on the day means you can position your target within the centre of the 'doughnut' it makes life very easy. On other days not so much!