don't know if anyone's mentioned, but the graphics drivers on most tablets make it impossible to run the game correctly, if at all.
the way it works is simple enough- the game centers your mouse cursor on the screen and hides it. Now, when you move the mouse, the cursor will be allowed to move a specific distance away from that center point before it refreshes and is dragged back to the center. The distance it went, as well as the direction, is calculated into the screen movement, thus you aim on the screen with your reticule.
NOW, when you use the pen on a tablet, there's an obvious problem- the cursor wants to remain under your pen/pointing device, so when you point, it will constantly do this aim function, thinking you're moving your mouse from the center to that point at an incredible speed, thus creating a massive spinning action that can only be stopped by either lifting your pen, or finding the correct central point of your screen.
If you're REALLY determined, you can play your game, but it's like blowing a marble across a table and expecting precise results...
You're not winning any time soon.
ANYWAYS, this mod would be good for tablet users, but unfortunately my particular tablet refuses to run gmod due to the limited graphic processing of a graphics tablet. I know some tablets out there run it, so it would be interesting to hear.
only problem would be using every OTHER weapon and such... work on that