I dont have any experience with the Prevail, but i have used other Berettas with the Kick-off. I find it to be the most irritating thing on the face, does a great job at reducing felt recoil, but removes the skin from your cheek while doing it.
There is more than one version of the Kick-Off. With the version on my Xtreme Unico, the stock only moves in front of your cheek, so there is no abrasion to your face.
I have noticed that, but I have not tried it, and it is not available on the prevail. If they could figure out how to do it on an O/U without making it look terrible, it might then be worth a look, but until such a time, i will stick by my original comment on that it rips my face to shreds
What gun and loads did you use?
for guns with kick-off, i have tried the A400 XCEL and A400 XPLOR Action, as for guns without the kick-off, i have tried the 682 gold E Trap, 686 White Onyx and the A400 XCEL.
And for load, I was using 3 dram #7.5 Challenger 1 1/8 oz.