If the metal is clamped that tightly, why would you want to use the glue?
If the glue is making any part of the series electrical connection, it's going to be resistance in the path, and will be a point that gets hotter (and most glues don't work as well when hot, some just melt, some just decompose faster than usual).
If the glue is not making part of the series electrical connection, then there's no reason to use it--other methods would be (probably) cheaper and better.
If you use the glue to secure the actual conductors, and then the conductors come loose later, and you expect the glue to be able to still help the system work, well, if it's a high current system like motor power path, it's either not going to work right because resistance is too high, but still "run", making it a little confusing to find the actual problem, because other bad connection issues will cuase similar problems, as will certain trhottle or controller issues---or it will not work at all becuase the glue will heat so much it will melt/etc--if it melts and then gets into a path between opposing poles of cells in the pack, then you have a resistive short across cells, which will drain those cells, at best causing a pack imbalance (and lowering usable pack capacity) and at worst killing cells.
Of course, it mihgt not have those problems, but those could be possible failure modes.
