I finally needed to change the battery in my extremely incorrect rep Tudor Heritage Chronograph and found the case-back tight to the point where my sticky-ball couldn't do the job. I try not to use the adjustable three-prong openers on this kinds of case-back as I will often slip and scratch it. Just for grins I grabbed the opener die for a DSSD and, to my astonishment, it fit like a glove! I spun off the back and found, not surprisingly, I did not have to correct battery.
A little bit of further trivia is the rep uses a Miyota OS21 movement and an SR927W battery.
Although this is a fairly chunky and heavy watch it's one of my preferred beaters when I'm motorcycle riding.
So, if you have one of these, and need to remove a tight case-back, grab a DSSD opener and it's smooth sailing. I bought just the single die from Watchbitz years ago right after the DSSD reps started coming out.