They are exceedingly rare today. I believe not many were built, even far fewer than the basic Continental touring model (you can find those, but even they're also somewhat difficult to find in complete, good shape today). At one point, I came across a Continental with drop bars, Sturmey hub, and 3-speed Cyclo kit (making it nominally a 9-speed). No clue if that was built up from a basic touring model or was an actual Clubman outfitted with Cyclo kit. I deliberately look for 1930s-50s era Schwinn lightweights, and having seen only despite deliberately seeking these kinds of bikes out, I would say they're in the "very rare" category of finds today.
There is one humorous aspect here as well. A Clubman and "continental" styling are actually two different things. Continental (French basically) means usually tighter frame angles and smaller fork rake. A "Clubman" is of English (non-continental) origin and usually has slacker frame angles and a bit longer fork rake than the French road bike. Reynolds 531 was the gold standard tubing on the English and French higher-end bikes.
The Schwinn bike looks like it's neither English nor continental - it looks like a classic Schwinn lightweight Cro-Mo fillet brazed frame built up with what passed for American-made road components. This all speaks to the fact that most of the American public was unfamiliar with these kinds of bikes and that Schwinn was pushing to make a market for itself with sporty, adult riders. It was a great idea that was ahead of its time - too far ahead of its time. Schwinn sold way more ballooners and kids bikes than these bikes.