Absolutely not, Lazortag! We even had a couple <Life Alert> members at the raid yesterday, if I'm not mistaken.
We do have raids that are only for Blackwater members, of course. The Saturday clears are different. They're open to the public, and instead of our normal loot policy, all loot is randomed amongst those who can use it.
I will post more information about the next one in the next couple of days, so keep an eye on this thread and on our website for details.
http://blackwater.guildlaunch.com