WE'RE A CREATIVE AGENCY LOCATED
We've won a ton of awards and have been featured in all of the Magazines.
Surprisingly, there is a very vocal faction of the design community that wants to see filler text banished to the original sources from whence it came. Perhaps not surprisingly, in an era of endless quib contingent of designers.
Relax and whatever fits with your design process don't set a of restrictive fast rules.
Using real content during design can distract designers and design review teams alike away from the design, and insisting on always using publication-ready content can be a real drag on the design process.