Just received the Tippitoes. It is easy to set up and easy to get baby into. My 5 month old is absolutely thrilled with it. He is laughing and swinging himself around with his new-found freedom. He is not yet sitting up so being upright in the bouncer is a welcome change for him from lying down on playmat or being in his bouncy chair all day long.
The Tippitoes is well-constructed of nice materials and appears to be completely safe. It hangs by a spring-clip that hangs on door frame. Architrave needs to be at least 3/4" wide, some of our doorframes are not that wide. But you can call up the customer care number on the box and they will send a hook that screws into the doorframe. Friendly and helpful when I called, and I wasn't put on hold at all!
Instructions recommend up to 20 minute sessions in the bouncer which seems sensible. The machine-washable holster comes far up baby's chest and holds him secure, and is adjustable as baby grows.
Very pleased with this product.