ltwguns.com

I used to hate them.
They were on my list with FLGRs, plastic mainspring housings, and triggers with holes in them.

Then I got a Kimber that came with them- and a FLGR, plastic mainspring housing, and a holey trigger.
The other things are gone, but the fwd serrations are not only still there, but I use them.

The way I chamber-check using the fwd serrations is easy to show, but hard to explain, but I'll try.
I start with a firing grip, trigger finger indexed on slide stop tip.
I sorta rotate my weak hand off my strong hand, under the gun.
Weak hand thumb and forefinger on serrations, thumb on the weak side.
Thumb safety comes off.
Slide pulled back.

Nothing unusual there, but the hard part to explain is that the three weak hand fingers which aren't pulling the slide back, are holding my trigger finger against it's index (slide stop tip).

Chamber-checking this way does two things that I don't get when I use the rear serrations.
It helps keep my trigger finger in place on it's index.
And, in addition to my strong hand holding the grip, my weak hand is cupped around the gun from underneath, so both hands are on it to decrease the chances of dropping it.

But I could change back tommorrow.

BTW, I use the words "chamber-check" rather than "press-check" because that brings to mind the thumb on recoil spring plug/finger in guard method to me.