OTA and Cable

I'd like to have both a Cable and an OTA Roamio but there's no good way of integrating them. The Mini locks itself to one Roamio so the only way I see of doing a bedroom + living room setup is with two mini's in the bedroom on two different TV inputs with one paired to the Cable source and one paired to the OTA source. The living room would then have two Roamio's each on different TV inputs. Is there a better way?