I've found Lunarglides to be really good. They fit well, are very comfortable and seem to encourage good smooth footstrike. The cushioning is nice and soft, without being too pillowy. I'm neutral with maybe a touch of pronation on my left foot and they seem to deal with this no problems. Don't feel the support like I do in 'normal' stability shoes.
A number of people seem to be using them having been in pretty serious stability shoes before - Kayanos etc. Some seem to do OK, but I wouldn't think they provide anything like the support of shoes like that so in a sense it's no wonder some people have trouble. I'd say they are for neutral to mild/medium pronators.
On the negative side they don't contain Lunar foam - the name implies it and other Lunar shoes (Lunar Trainier, Lunar Racer) do but the Lunarglides are just plain EVA. This means they don't tend to last so long and may get crushed pretty quickly by heavy runners (like me). They are a good looking shoe, but for some reasons have been made in very ugly colours.
Overall they are very good, feel great and seem to make you run faster. The fact that everyone has sold out is a pretty good indication of how good they are.