Vexpr doesn't seem to be able to switch values for symbols the way expr can. In the expr examples, there's this:
expr $s2[$i1] where $s2 is the name of the table to reference for lookup. This is really nice. Vexpr will let you put a table name when you create it, but it won't accept values in the format #0-name, so you can't have a lookup that's specific to an abstraction. Also, vexpr doesn't know what to do with symbols in the inlets even with scalarmode on.
Any chance this could get fixed in a point update?