Yup, me and most of the fast locals are running stock gaskets and over 30 psi. I have however toasted motors before blowing the stock gasket. My last motor in the 2g I was at 29 psi, 64 lbs/min, and motoring my way down the track to a 11.3 at 126 when the motor let go. The HG held until the head finally lifted because I knew it was a quick pass and was not going to let off when the motor started to fail
When the head lifted the pressure shot the front water pipe clean out of the pump. But, the point is that the stock HG will hold up to the power. Eventually the 255 being a pussy and leaning me out to 13.5:1 took out 3 plugs and pistons before the gasket went.
ARPs properly installed are the key to making it work, as well as good tuning. Excessive knock or ridiculous amounts of timing will take out nearly any HG.
The main advantage to using a stock HG is that it will seal on nearly any surface. The Cometic and other metal gaskets are finicky about surface flatness and finish RA. People are popping these things at 20 psi on shake down passes if the block and head aren't cut to a smooth enough finish, and not all shops can or will do it. Stock gaskets are also cheap. If one blows you're out 40 bucks and 90 minutes of your time.
And to reiterate what has already been said, you can not measure the strength of the motor or any other part by boost pressure alone. Boost is airflow that you are NOT using