I'm not heavily using it, in fact I just found out about it and currently testing its functionalities.
Like I mentioned, I tried to install it on the VPS where i have nethserver but it required a minimum of 4GB RAM so in the end I moved it to its own dedicated VPS.
I feel this requirement would limit the deployment of NS to a wider audience - while its easy to get a low end vps with enough resources to adequately run NS for a low price, a higher memory server would be a lot more expensive and less affordable for more people.
Perhaps Alfresco could be included as an optional install for those with the adequate hardware? It really is a great addition and I'm really happy to have found it!