I think I am more enthusistic abt inversions than anyone here in CZ. Unfortunately, I do not own any inversion equipment. I have learnt to invert from my ottoman+sofa cushions. But that helps me only invert my upper body. My legs are horizontal, to support my body.
I can do headstands, w/o putting pressure on my neck, but cant hold it for too long.

-IT ( Inv table) suspends the body by ankles. Hence lot of pressure on the ankles and perhaps knees.

-IS (Inv Swing) puts the weight of the body on pelvis, which I guess would be better.

Plus IS can allow us to achive a lot of YOGA poses. Being an active Yoga doer, I am thinking of investing in one of these. Plus its so portable and I can carry it on trips, vacations etc.

Couldn't find any review of Inversion Swing on CZ though.

If Rosie O Donnel can use a swing, I am assuming its not that hard. Considering she is over-weight. :)  She cliams she has successfully used it for treating her depression. She hangs upside down using the swing for like 30 mins a day. She swears by it, that it has cured her depression.

Source: http://www.msnbc.msn.com/id/17541917/wid/7279844/