If ya got clean green then ya i can see where the square stuff would be good.
I do use RS some times but there is allways the ****** bit that f-cks that nice set up chain ya had and it really really ***** me off.
When we are blocking i like to have 2 70 ish cc saws (441s or 461) set up one with RS and the other with RM for those ***** bits works a treat.
Carbite for me would be nice at times but its not cheap then ya nead a diamond wheel to sharpen it,na not for me.
You should should see the crap wood i have been blocking/splitting this week a RM chain will just last a tank of fuel but its easy to sharpen when re fuel i ues the Stihl 2 in 1 sharpener for that.
Chain i like the Stihl RM the best but for the price its not twice as good as the Carlton RM.
Spot on S441, my experiences also to a "T".
The one x skip square file full chisel I've owned cut extremely well, and still did when I round filed it after finding the sq. filing to high tec. on the job. Could have stuck learning the sq. filing but didn't bother. Something about filing downward from the other side, must be hard to retrain and old dog I reckon.
That skip chain round filed, closer to 25degrees than 30 degress, in clean green wood, best I've ever used no doubt, absolutely fast, fast, fast !
In Vic., general speaking - to much rubbish as dust/dirt from wind/ants etc and wet muddy pipes inside so the semi chisel is slower, but keeps sharp and cutting longer that full chisel IME.
Ripping Yellow Stringy posts freshly barked and that green the boots needed sawdust on the bark to stop slipping, used conventional full chisel and it was fine.
Have 404 Carlton semi chisel also S441, a lifetime supply left in the 3/4 's of the 100ft roll that's already about 3 or 4 years old.