I had seen info elsewhere where when you setup metamask for the first time the two choices are new wallet or restore using a passphrase, i guess you just enter the exodus passphrase and it converts it. Im still hesitant to go this route though.
There is no "conversion" being done, so I wouldn't hesitate in the slightest about doing this.
To assure yourself, you can leave Exodus set up on one device, say you have it on mobile. Then put the metamask extension on your laptop. You use the 'restore using passphrase' when setting up metamask, and you will see you will simply have all your Ethereum mainnet stuff from your exodus wallet there on the metamask. No trick or conversions apply. Think of it like using either OpenOffice or Word to view/edit the same .doc file.