In my experience semi chisel isn't worth using on any mid to high powered saw as long as You know how to sharpen a full chisel chain, either round or square - I am a "round guy" myself!
Semi hitting dirt while bucking will stop self feeding just the same as full chisel, just because the operator can FORCE further bucking cuts by utilizing the saws bucking spikes/dawgs doesn't make it right as by doing so the wear to chain, bar and PH increases exponentially.
Also, even when sharp semi chisel requires much more power from the PH to be pulled through a log than a identically round ground/filed full chisel loop.
And semi chisel cuts much slower than full chisel!
I have some Stihl RM semi chisel in 3/8" that I made some test cuts, can't remember how I felt about it (I think I got a video of it on YT).
I also have several semi chisel loops on my mid to small saws in 3/8" LowProfile and .325".
Lets just say that my 40cc wearing a full chisel .325" loop out cuts my 46cc wearing a semi chisel .325" loop - same log.
Semi chisel does have its place in the chainsaw world, but so far I came to the conclusion that place is for users whom do not know how to sharpen a full chisel chain.
Stay clear of low budget semi chisel chains, I still have a TriLink semi chisel loop - it is underwhelming.