I'm not a lawyer, but have been reading and studying this business of copy ownership, etc. for the last couple years.
The fine line, according to lawyers I've interviewed who specialize in this, has to do with with how you intend to use the copies.
As you can imagine, that line is marked with dollar signs.
If, as the aforementioned company did, you plan to repackage the content and resell it, you're depriving the original owners of potential income.
If you take the content and splash it all over your 'blog in order to drawer readers, thereby drawing them away from the legal owners of the content, you divert potential income from the legal owner.
Copying clips for prospective employers is not, in and of itself, going to divert readership/circulation/cold hard cash from your current employer.
Some might argue the dollar issue applies, because if you get hired away from Employer A by Competitor B based on those stellar clips, droves of readers will follow, thus depriving Employer A from readers and income. If you've got that kind of sway in your marketplace, you are well beyond the stage of creating clip packages.
Again, I'm not a lawyer. But your state press association has a lawyer, who can likely advise you on this.
Good luck in the job hunt!
EDIT: Also, it's been my experience that editors want to see clips in an 8 1/2 x 11 format. Any comments on that?