CG-Locks...those really work?

[byronleehk]

The new CG-Lock ™ is the first seat belt add-on proven to deliver new levels of driver control and passenger comfort. The result: more precise handling. More feel and feedback.

The link (http://www.cg-lock.co.uk/index.html)

A great (and cheap) mod, seriously thinking about getting them;)

[Matra et Alpine]

If you're a trackday warrior you get used to pulling inertia belts to make them lock-on.
Does the same as this little gadget.
Not sure these woudl be a good idea with the latest inertia crash systems where they pre-tension and then release small amount of tension to limit the damage the belt does.