ECC and gateway System consistency with unicode

Hi,

We have an ECC which is of non-unicode.

We want to implement fiori applications into it by bringing in new netweaver gateway server.

So is it possible to implement fiori applications by keeping our gateway server as unicode and ECC as non-unicode.

Or will it work if gateway is of mixed unicode and ECC as non-unicode.

Please suggest here.

Thanks,

sunil