Stone wall in late game

[IntelCoreDuo]

Hello, I am restarting the game as a Warrior, and considering investing in stone wall. Is it strong enough to be somewhat useful in late game? I assume it can be helpful to bottleneck enemies/get control of what troops attack me first, to protect my own or the last enemy troops while i unearth treasures, to slow down a rush or to defend archers. If a stone wall level 1-2 (3?) can take a couple of hits from an average late game troops, I imagine it would help to accomplish these targets. If, however, it is only useful in the beginning, I will probably not invest in it, unless the competing skills are equally useless in late game.

Any other uses for stone wall? Forcing enemies into traps f.eg?