For the largest part i've got it up and running. I have a working comment system for each k2 article.
Yet there seem to be a few more minor issues that need to be addressed to make this a useful plugin.
1.
Administrator:
Manage comments->com_k2 from the drop down list makes the toolbar and the config menu disappear. I haven't as of yet been able to find out why, but maybe someone could speed up this process if they already encountered this problem.
2.
the standard joomla SEF doesnt really play well with joomlacomment/k2 so i wrote the plugin to support SEF as well, but it needs to be enabled manually from within the plugin php. Maybe it's a good idea to be able to add admin params from the plugin file, this would make the plugin way more portable, this way i could add an 'enable/disable' option to the com_k2 settings without hacking joomlacomment!
In any case, i am almost done with the plugin, so hope i can get help on these issues so i can upload it asap for other users

After that, phoca-gallery and hwdvideo (probably all this week, since i need them for a client).