Correct me if I'm wrong,
We already knew about, and could purchase the T-4 in Sept 2010, before it was showcased at Winter NAMM 2011
We did not know about, and could not purchase the S-910 until Sept. 2009, after it was introduced at Summer NAMM 2009.

Therefore Music Insiders may miss out if they do not attend a Summer NAMM...'ya never know

ps...If I go, I'll make a b-line to booth 618