I just noticed this topic and wonder if you have made plans for your trip to Greenland.
It is one of these places you will either love or hate. If you appreciate nature you will love it.
Have been there twice visiting friends so I had "special" access to hunting trips and was invited into private homes.
This company offers Kayak trips to Greenland
http://www.piragis.com/international
We have been pleased with them as outfitters in Minnesota, but do not know about their international tours.