I think we are saying something similar.
Can it work they way you describe? Yes it will work.
Is it safe? Not according to me, No
Do I recommend anyone doing this? No
Is it legal in your country? Probably not, but I don't know.
(Now with all the disclaimers out of the way a bit more detail )
I would still say that you need both the BMS and the control interface link that controls your charging. It's not a one or the other scenario.
The driver links the battery to the system and then the system manages the charge/discharge. So the BMS never disconnects in normal usage, which is what you want.
But the inverter will also ignore that command to keep the power stable if it needs too. You will see this happen when a large load stops suddenly and the battery is at 100% SOC. Another place where you will see an indication of this is when there is a negative power draw from the grid even if you told the ESS to not push power into the grid.
When this happens the battery will either have capacity to handle this, or it will push the battery into protection mode. 99% of the time the battery will just soak this up, but you want the BMS protection to be there when it can't.
Also remember that there are delays in this path as well. The Multiplus ramps power delivery up and down and can take up to a few seconds to do that. 750ms extra if you use ET110 measurement device (worse for some of the other models) and the BMS/driver only update every 1-2 seconds depending on which BMS you use. You can have a problem scenario of up to 5-7seconds if you don't have the BMS in the circuit to disconnect.
Perhaps also look at what Victron recommends with
their Lithium battery. You will see in their product page it requires one of the listed BMSes and each of those BMS will disconnect the battery when a problem event happens (it is in their product description).