Product review (4 stars): So far, so good.
Granite was installed by pros and they wanted to use one of those wide and ugly sheet metal bars that has tabs to screw into the cabinet on either side of the dishwasher.  Asked them why couldn't they drill holes and add inserts and they said no.  So, I shopped around and found these.  Installed myself in just a few minutes following the instructions provided.  Only thing I would suggest you do differently is to peel back 1/2 of the red tape so that it hangs down and then use a pair of needle nose pliers to pull it off the remaining part of the adhesive backing.  I didn't have any luck with my fat fingers pulling a tiny piece of slippery red tape.

Just one caveat: You won't be able to use the dishwasher for 24 hours and you will need to be careful opening/closing the door for at least the first 5 hours.  There was an extra page of instructions that came with the clamps with tips like that for a problem free installation.  The instructions say it sets in 5 minutes but the extra page suggested otherwise. I also clamped mine for about 15-20 minutes doing one bracket at a time in case I had to make any small adjustments.

I figure that even if the adhesive fails, the brackets can be epoxied to the countertop (and hope that any future dishwasher has the same exact mounting bracket hole locations).