This is a simple but effective integration solution. If you use both Jomsocial and Kunena I highly recommend this component. The fact that Jomsocial group discussions had little to no sort functions or features really bothered me. I wanted each group to have a central discussion forum and this dealt with the redundancy perfectly.
Really, I am surprised that Jomsocial haven’t included something similar to this as standard. For now, this is the best solution.
If I was one to pick hairs, the automatic forum creation feature in JSGKunena doesn’t allow the forums to be sub forums, which may have been a nice feature for sites with large numbers of groups. However, this can be done manually.
In all, this is a great component and well worth the money!
9/10