Hello Lukas-
EV certs are supported on the SSLM for SSL decryption and initiation. The client browser handles the extended functions of the EV certificates - The SSL server does not do anything it would not for a normal certificate, so the SSLM is unaware/transparent to the change. You will want to check out bug ID CSCsl42088, depending on how you choose to deploy the trustpoint, you may need to have a minimum code to meet the fix for it.
For anyone who is interested, here is a good bit of information about what EV certs are:
http://en.wikipedia.org/wiki/Extended_Validation
Regards,
Chris