Hi
I am the UK distributor of the Houdini Stop, I noticed on our stats that we were getting a number of hits from this thread so I thought I'd drop in to help clear things up.
The Houdini Stop is a perfectly safe device, we have had it crash tested and it was shown not to effect the performance of the car seat or harness in anyway.
You can view the results of our test on
www.houdinistop.co.uk
If anyone has any questions please don't hesitate to contact me
andrew@houdinistop.co.uk