I just gave it a quick 30 second run through since I need to go get some food. I really like the aesthetic changes over the original; they're interesting and pretty without getting in the way of gameplay.
If anyone's wondering, just drop the bsp in the: "...\Steam\SteamApps\YourEmail\half-life 2 deathmatch\hl2mp\maps" directory
The custom textures don't show; most obviously
here.
It doesn't get in the way though.