As a Dominate I dont like my girls masterbating (well cum, they can always touch themselves), cause I want them to enjoy sex with me. I always give them orgasims (often 5+) during sex, unless I specifically want to tease them, or to deny them of it...

As far as beign a Submissive... Im a male, I need to have sex or masterbate on a frequent occurance or my entire life fills with the desire, and I become useless.. I cant work without it, or even focus... so unless its like a extended vacation It really would be a bad sceene for me.