Just going to point out that although both ice and glass have some variation in hardness with temperature and composition, glass (~5.5 on Moh's scale) is typically much harder than ice (~1.5 on Moh's scale)
Carry on ....
Good info. Thank you, sir. I guess arrows can break ice. Usually all I need to be convinced of something is a good argument using some basis I can associate in the game world.