I run a couple of semi-chisel chains with no depth gauges (rakers) at all... grind them clean off. I use them mostly for cuttin' dead, punky stuff laying on the ground when clearing a new trail or road in the woodlot... they zip through damn fast. I'll sometimes use them for cuttin' softer wood like pine and fir, also cuttin' roots and such out. But ya' haf'ta be damn careful with 'em, if the tip of the bar even gets close to something... look-the-hell-out‼
I had one of those chains mounted this summer 'cause I was building a new road... dad came up and got the saw out'a the shop when I was at work (his saw was at the lake home). He wanted to clear some brush and small trees along the fence... damn thing kicked back and got his leg as he was pullin' it back out'a the brush. Nothin' too serious, but it was a wake-up call... as long as dad's around I won't be leavin' one of those mounted again. To him, a-chain-is-a-chain, he wouldn't know what a depth gauge was if he was lookin' at it... I do all his sharpening for him.
Between dad and the 5-year-old I can't leave anything even remotely dangerous layin' 'round... I even need to shut the outlet breakers off in the shop or one of them is likely to fire-up the table saw, welder, or whatever
Heck, I walked in the shop one day and the boy was tryin' to sharpen a crayon with the bench grinder (he'd watched me sharpen my carpenters pencil).