Same, seen loads of 7200s with the blank bezel. Might be a regional thing (though Apple's own tech manuals are usually moderately good at noting regional things, so...)
Worth noting in this connection that the OP, @joshc and I are all in the UK.
Also, the 650/7100 machines came with a no CD-ROM option as well. With the 650 series, you could have either a super base model version with 4MB RAM, no ethernet, and a LC040 chip, or an 8MB, ethernet, and full '040 version that had no CD-ROM drive. My current 650 was one of those. It has been upgraded to have a built-in CD-ROM drive, though.
On US model 7200s, I wouldn't be surprised if you could order one without through most resellers, but they typically stocked the CD equipped machines.