Be careful – there’s 2 Rock Lobster set-ups. Custom stuff from Paul Sadoff a la Indy Fab, etc. or the Taiwanese made stuff sold by Merlin Cycles. 2 very different propositions.
Sadoff did a bit of a Jones type thing many years ago where he designed and sanctioned Taiwanese built frames that sold for several hundred quid. That seemed to die a death after a year or two, but Merlin took it up off their own back (or something like that – I’m making HUGE assumptions on that!), hence the 2 different Rock Lobsters.
That CX bike is clearly a Paul Sadoff made frame.