Skype is terrible, I have to use it to connect with family in Europe & Australia and it's getting to the point where I'm contemplating teaching my 70 yr old mother how ti use google hangouts (shudders)
However, Skype for Business (formally known as Lync) is rock solid.
I would postulate that since the rebranding of Lync, the old consumer-Skype is on an end-of-life roadmap.
Hololens + LyncSkype in an enterprise & smb setting makes a lot of sense.