Enterprise Vault version best practices

Hi

As the title suggests I just need a little information as to Symantec's recommended best practise for versioning on Enterprise Vault for Exchange.

We are currently running EV 10.0.3 and the Outlook client through our business.

There are a couple of machines which have Outlook 2013 SP1, and we have had to install the 10.0.4 CFH2 Outlook client onto these to ensure these people can access their vaults and I was wondering if this was something Symantec would suggest we don't do and if so why that would be.

From what we can tell, everything seems to be working fine, but we are quite new to this product and wanted to make sure that we aren't going to be causing ourselves future issues.

Thanks

Matt