I've been reading some articles about the new Ubuntu for phones and tablets. Some of them are saying that it's a skin for Cyanogen mod.
I looked on http://phablet.ubuntu.com/gitweb and saw at bunch of Cyanogen parts.
If this is true then the advantage is that it should be compatible with a large number of android handsets because Cyanagen works on alot of devices. The disadavantage is that that it may not be a full Ubuntu implementation that some people are expecting. Maybe they've found a way to sideload the Ubuntu OS into Cyanogen?
Maybe someone with more information can explain better what's going on under the hood?