Hm, the IDENTIFIER({{var}} || string) should work for create statements with DAB.
I also spent way too much time on AI giving me wrong answers (Jinja templating format on the first place).
Mind that there are no spaces in {{var}}.

BUT there are some limitations, f.e. in defining FKs f.e. (REFERENCES). That does not work (yet).
Dunno if this helps