Eric,
My Meridian speakers are in the wall behind the fabric wall and screen. I have the 300 Series in-walls. You can read about them as well as see some before and after shots of the instalation here...
http://avrev.com/equip/meridian_300_inwall_speakers/
They sound fantastic. The rest of my gear is tucked away in my Mid Atlantic Rack which is built into the wall behind the main listening position.
Thanks for the comments and I'm glad you're enjoying your system. You have a very nice setup to say the least.