I have and I have seen it done.
When you do it this way you need to split the protrusion equally on both the head and the block.meaning if your using .055 wire and leaving .012 protrusion on just the head you will need to split it and leave .006 on the head and on the block.There is really nothing to gain from doing it this way and I have seen them fail that way just as easy as a o-ringed head.

As for fire-rings....
In an all out competition vehicle they may be the best option but for a double duty vehicle which sees many normal heat cycles they are not a good idea.I know many guys who went to fire-rings for the double duty rides and have now gone back to o-rings as they got tired of the fire rings failing while street driving.

 

I just had fire rings put in my truck,and am having second thoughts.
Some say they are the way to go,others say not for a daily driver.
I know the o-ring job didn't last.
I would just like to have it somewhat dependable,and not have to spend all my free time doing head stud re-torques.

 

Fire rings are mostly used with competition motors that run dry heads and filled blocks. As others have stated they dont like heat cycles mainly cause the head floats around over time . We use them in alcohol injected big blocks as do top fuelers. but they dont have 2 worry about coolant cause the heads are dry . The o-ring can move with the head and helps direct the pressure where it needs 2 be (the combustion chamber) you dont need 100#of boost to make lots of power. you need more cfm . i have seen guys make 1000 hp with less than 100# of boost . its just like an air compressor. would you rater have an air compresser with 100psi and 600cfm or 100psi with 900cfm witch one would do more work? the same one will make more power. the problem is getting it through the motor.

 

is there any advantage to running the marine head gasket rather than a standard when o-ring your head?

 

Other than lowering your compression, no. The marine gaskets I have heard of failing more than standards because of the added thickness weakening the gasket.