The only thing ive heard about DCC is that the incidence of jaundice is meant to be generally higher. That said though, only one of my children had DCC and he is the only one whose jaundice was the mildest and resolved itself the easiest. All the others, well some of them were orange. Everything else ive heard has only been positive and in all honesty, having experienced 6 of my children being immediately clamped and 1 of my children being DCC, his presentation after birth was remarkable. My 6 that had immediate clamping were all a blue/purple colour for quite a long time after birth (they were fine and breathing etc, just their colour took awhile to pink up), they were also quite sleepy (no drugs to make them sleepy either). My DCC baby was immediately pink and so super alert it was amazing, so amazing i commented to my mw and said hes so pink and alert compared to the others, why is that? And she said, thats the DCC and i really beleive it was.

As has been said, the only reason they clamp immediately as general practice, is time management. The cord was always left to pulse years ago, its only in modern times where everything is about efficiency, schedules and protocol that the immediate clamping has come in as sometimes it can take awhile for the cord to stop pulsating and the placenta to come away naturally etc, well they dont have "time" to just sit around and wait.