I asked same thing on Vesternet and I got a negative response
"What is the difference between the bi-stable and the contactor switch ? I need to switch a load of ~ 4k W (electrical water heater) which uses a double switch (live+neutral), which one suits better ? Do u have any feedback from Vera users that have managed to add them in their network (smart meter, contactor, bi-stable) ?"
The answer I received
"There is no difference between bi-stable and contactor switch. BICOM or IKA are only devices that are compatible with Smart Meter ? in your case you can use BICOM.
From our experience Smart Meter is not supported by Vera"
It is pitty though because their switches are the only capable for handling high loads (32A). It'd be nice for Vera to support them.