Torquetalk, I've done autos and EOLs in an R22 - autos are OK once you get the lever down but the Nr range for auto isn't very high (especially compared to the G2) and the EOL is very exciting (compared to 3-blade heads like Gazelle and Squirrel).
If the G2 has been certified in the way Maff says, that is far, far superior to either the 22 or 44.
As an instructor teaching ab-initio students I would be far happier with some room for student handling error in a Cabri than walking the tightrope that is the R22.