Not long in the past, SQL Server licensing was an easy and straightforward process. You used to take one of a few paths to get your SQL Server licenses. The first and easiest path was to buy your SQL ...
Until now I've never really had enough cores in a box to worry too much about allocating multiple vCPU's but now that I have 2x6 core 5600 CPU's in my new vSphere hosts it's something I can consider.