You reckon? Less parts and grief with a charger, hell, on a traditional Rootes type you dont even need an oil supply.

Oh, the thing about to turbos will keep inreasing in peressure until it goes bang isnt strictly true, depends how big the turbo your using.
Even T34s on decent spec cossies cant hold 30psi at high rpm even with the wastegate welded shut due to the engine being capable of consuming more than the turbo can give it.
Same with a charger, run a huge charger on a lil engine and gear it right and itd create immense boost, but put one too small and the boost would be low no matter how hard you span it.

The twin charging idea is brilliant for a smallish capacity engine if you got the room for it all, obv just running decent ALS all the time would be just as good, but not exactly engine or police friendly, lol...

One serious issue you have with chargers if you running them hard is premature and uneven crank/bearing wear as chargers drive belt is off one end of the crank and it takes a fair amount of force to turn a charger.

Even though chargers are more commonly associated with big V8s, IMO they the engines where they totally pointless as with the big capacity you got the ability of spinning up big turbos from nothing anyhow.
The mustang guys etc in USA have realised that now, that turbos give them more performance, reliability, and even drivability.

But superchargers can make small engines lovely to drive, as they dont always have the ability to give you the low down responce you might want.