ENBD and CIM Banque are not even comparable. ENBD is obviously safer than CIM.
If you have $3M, you can go with almost any bank in Switzerland like UBS or CS but still Swiss banking doesn't make any sense because of fees. It can make sense if you have $10M+ because fees are significantly different for $3M and $10M. There are many safe destinations with better fees for $3M like Luxembourg, Singapore, UK...