Split Screen Garry's Mod?

This has probably been brought up before but is it possible to use or is there any chance of implementing a Split Screen mode to Garry’s Mod? Is that functionality in the source engine version GMod uses or is it only a L4D/2 engine feature?

[sp]if searching wasn’t disabled right now I could have searched for this instead of asking you :downs:[/sp]

http://www.facepunch.com/threads/992377-GMod-Splitscreen-Heck-yes!
site:facepunch search works

Go to google and type in site:facepunch.com “what do you want to search here” without “”