Just found this on the pentagon supaglass website

Quote:

11. Will I be trapped in the vehicle by SupaGlass?
No. Using a glass-break hammer ( but from the inside only ) it is relatively easy to break a window that has been treated with SupaGlass.

In the event that glass treated with SupaGlass is shattered in an accident, it is relatively straightforward to push the window out from inside the vehicle. You are also pushing against smooth plastic not shards of glass. The key is that the SupaGlass film is applied to the inside face of the glass - when shattered, pressure on the glass from outside of the vehicle compresses the fractured glass particles whereas pushing out from inside you are separating the particles. Try pushing your finger into an egg from the outside, it is very difficult whereas from the inside out it is easy.

The emergency services are not limited either by SupaGlass - in the event of an accident, SupaGlass reduces injury from flying glass whilst the Fire and Ambulance Services know how to access occupants in a vehicle without being hindered by windows treated with SupaGlass. The Fire and Ambulance services are some of our biggest SupaGlass customers!

Thanks Josh and Npinks,
I have had a chat with them but I'm always a bit skeptical and need a bit of re-assurance from people with 1st hand experience.
I'll report back when I've had it fitted next week.
Cheers guys,
ChrisP MY2011 HSE Santorini/Ivory/Piano Black/Privacy Glass/TV .Sadly gone.
Audi A5 Sportback Black Edition 3.0 tdi quattro S Line

have a look on You Tube, there is a few showing external hits with hammers etc, maybe able to come across one show how to escape from a car with supaguard

Or explain your concerns to supagaurd and they might have a demo they can send you or even show you