Since I have seen different registrars take different interpretations, I have only made my comment. If the company has no records of any design at this time, they may be able to take it as an exclusion, but when the time comes for them to do a design, they will have to have a system ready to deal with it so it's not really a catch 22.
I have also seen registrars which consider fixture design as part of the service design.
This has long been an area of contention and many disagreements have arisen from, for example, whether service companies are design responsible. The elimination of the old ISO 9002 was in part recognition that service companies do design (they design their services).
I'll stick with my earlier post - I would have a serious discussion with the registrar before unilaterally claiming a design exemption.