Yes, this can also be sub-optimal depending on how you define surplus.
If the battery is prioritized over the EV charger, then that can lead to extra charging and discharging. From solar to Victron and then from Victron to EVCS. While if the EV is available, you could have charged it directly.
In a recent video is saw some footage of the closed beta: EVCS and (D)ESS - summary of problems/improvement suggestions - #14 by langestefan
It seems that EV charging is coming to DESS this year.
That still leaves one more problem, namely third party charger support. The most promising way forward here to me seems support for OCPP in victron. Which Victron should add themselves, but they aren’t interested it seems.
Personally I am not a fan of EVCC because of their licensing, i do not want a subscription. On top of that it seems overkill to run with victron, when all we really need is OCPP support. (but yes, EVCC is awesome software nonetheless)