Here's the situation:
My client runs SBS2011 (Exchange 2010) and clients with Win7 and Office 2010. Now they are looking to expand the number of pc's. The issue is, that the availability of Office 2010 is not as plenty because the new version is being pushed. And if you find it, it is way more expensive than 2013. So I was looking to just buy 2013 for the new pc's, the only issue I'm worried about is that Outlook will give some trouble. This is because roaming profiles/folder redirection is used and I have some bad experience using different versions of Outlook in this case. Though it was on a Exchange 2007(SBS 2008) server with Outlook 2007/2010 clients. On the other hand with another client I did implement 2013 in a branch office, while the head office was running Outlook 2007 and it did work (SBS 2011/Exchange 2010). It will give a message when opening Outlook 2013 that it is "upgrading" the mail box, but no further issues.
Have any of you experienced any problems with a similar situation? (Please specific to Outlook 2010 and 2013 combined with Exchange 2010 and roaming profiles)