Yes, in this situation you may have a "chicken or egg" situation, when for example the VC VM goes down and it is attached to a DVS. When the VM is back, it cannot connect to the DVS because VC manages the DVS, and VC is down, so there is no other solution than connecting the VC to a STD switch. Another of the bad troubleshooting scenarios you may have.
Sorry to scare you with a lot of things, DVS is good but you need to take care and control it really well, and think how you can resolve a problem in case it appears.
Good luck with your DC.