Skain means Knife or dagger in English and Dubh means black.
I pronounce it "skee doo" or prehaps "skeen doo".
To be quite honest the Gaelic language is beyond me, so unless you speak the language you'll probably lose some of the more subtle nuances of the pronounciation. Its also mean't to be a very hard language to learn.
The people I have known who spoke it, always mixed in English, as English has a larger vocabulary, and is easier to get your tongue around!
Not really surprising only 5% of the population speaks it, and most of those people are from the Western Isles of Scotland .
I digress, I should be talking about preparedness!
Martin