You cannot install CFW so for both questions the answer is no.
If You could read EID Root Key, then You will be able to copy any data from HDD and even clone one drive to another via Expander script in PS3 HDD Decryption Helper. But this key cannot be get on HAN or HEN. Not today at least.
However, taking HDD from one PS3 to another is not possible because both encrypting HDD by different set of keys.