There had been a lot of discussion about multiple sub configurations and use of the SMS-1 pre and post release here:

http://www.avsforum.com/avs-vb/showthread.php?t=495331&page=12&pp=30

I've given you the link to go close to the release date when people started actually using one (or more.)

There was a spokesperson from Velodyne speaking to them before the actual release date, but I did not see anything else from him after that.

Perhaps the Outlaws can get some input/help for us from Velodyne. (hint, hint)