I just got my DSSD back from the Zigmiester. He relumed the dial, hands and pearl, sealed the HE valve and presuure tested for me. Reading the post above I though he was reading my past.
Anyways, the lume is outstanding and I haven't put under water but I am sure for short dunks it will be ok.
I would suggest this treatment to anyone with a good rep to take it to the next level at really minimal expense.
Enjoy....