Yes if you intend it to be used as a second PC account with the same email during the c;opy..I use the same email for both my temp pc account and my xbox account (different tags though) is that going to be a problem?
No if you intend for the console account to be cloned to that exsisting PC account...
1 email address can have A PC PSN and Xbox linked two it as they are all seperate data bases to store 3 accounts..
you will not be able to have two PC account on that email...
The PC account is not temp its still there and willl be there on the email, the "SAVE" of the PC account needs to be zeroed to be used... no matter what the email