Actually, SWP stands for Single Wire Protocol. The SWP is the protocol you need to communicate the NFC controller chip with whatever secure elements may be available. Therefore, if you have a NFC controller that supports SWP (like the NXP PN544 the C7 and the N9 have), the device has the needed additional hardware support for it (something I don't know if the C7 or the N9 really have), and there is the needed software support for that in the firmware, you could use a secure element within the UICC. So the lack of an eSE in the device doesn't pose any problem... as long as the SWP support is in place. Best regards.