Things are looking good; 5 people now, 3 still waiting to accept their invites, and 1 who wanted to join but I need to get her email. I'd say that's a good number. Don't want too many people joining in too late (unless they really want to sketch it up).
There are also a few people who couldn't join in this time around, but may later on. They will be lurking. :)
Thanks to all who have joined up! Sketches are looking great, and I'm looking forward to doing (and seeing) a lot more.