How do you use Front's CRM w/ other CRM tools, or do you use it exclusively in Front? I'd really like to figure that out, thanks!

First, Front is not a CRM. It's a communication tool. I do not advise Front to be used as a CRM. However, I do recommend Front as a communication tool. It is the best product out there that allows teams to work within the same inbound channels such as email accounts that need to be management by more than one person. It's a great solution to put all your communication in one piece of software.