No difference in outlook as far as priority goes - I've always said that the First-Class game (at both international and domestic level) is far more "cricket" than one-day cricket (likewise at both levels) is and I've certainly always treated them as totally separate. But I tend to find that those who, in 2007, are around the 30 mark or over have more of a propensity to treat one-day cricket as far, far more fourth\fifth-class than those my age (I'm 22 as of this post for those who don't know) who tend to look upon them more as second-class.
I've always thought that top-level international status, at both First-Class and one-day level, is worthy of sacrosanction. If I could only give such sacrosantion to one of the two, I'd go for Tests, of course, but my ideal choice would and always has been both.
However, I in turn have always treated Twenty20 as fourth\fifth-class. I couldn't care less about it, and it honestly doesn't bother me who plays what, what's classified as what, who does well, or anything, in that form. It simply passes me by, I have no interest in it.