Part of the reason why I'm totally wireless.
I've played enough venues with dodgy electrics to protect myself.
These days - fortunately - there seem to be less iffy venues (at least around the south east)
But I always carry an RCD as well JIC
I'm not a big fan of the full on tone with the spark.
As mentioned above - the lower gain tone is simply fattening and warm.
They're also fairly easy to track down secondhand