Well, there's a lot of times I need to know whether the weapon in use is enchanted or not; or sometimes which enchanted weapon you're using. Often this will come out when you're telling me your to-hit modifiers, but if the roll is 13 + 3 (Str) + 2 (magic) and all you say is "18 to hit!" I'll be asking "And how does that 18 get there?"Nope. 1) as DM I know what weapons my players have and use, 2) you're going to give me the damage and it's going to be one of the weapons on your sheet, why do I need to know which one it is before you attack? You aren't going to pull out the dagger and then switch it for the longsword, yelling gotcha to me. You're going to just use the longsword.