Propper and Portal 2, no longer a huge pain in the butt!
So I'm sure most of you know what Propper is. The edited VBSP to compile into a model, over a BSP. Whilst it's not officially supported on Portal 2, it DOES work. With enough time, and some tinkering I'm proud to say that I've got something for you guys!
I have a nice little CMD based wizard installed, and model creation process for Propper and Portal 2. No more heavy lifting, input your model name, the folder, hit enter, and BAM model.
At its core this is no more than 2 BAT files to make some folders and fire some commands. But it acts as a wizard and holds your hand through the model creation process. There will be some bugs, I doubt I will update this tool much, if you find something to break it let me know and I'll do my best to patch it up.
Disclaimer: This tool modifies certain environmental variables in the Windows operating system. I am not responsible, and will NOT help you fix it if it breaks anything. Use this tool at your own risk.
Download: http://www.tophattwaffle.com/wp-content/plugins/download-monitor/download.php?id=Portal2Propper.zip
You can see a short video of it's use below. The video also serves as an install guide. I hope you guys like it!
http://www.tophattwaffle.com/ - My site for Source Engine Level Design
http://therewillbescience.com/ - Portal 2, Lab Rat
http://www.moddb.com/mods/portal-2-lab-rat - Portal 2, Lab Rat (MODDB)
I was sure that this was done a while ago. I just wanted to make one that did not require loading a different version of Hammer. Or have the need to copy your model from another game, into Portal 2. I just figured since I was writing this for myself and a friend, you all might enjoy it. As set up takes under 10 minutes, and a model compile takes about 2 seconds.
P.S. The video is still uploading. I should be live soon. Slow interwebs!
http://www.tophattwaffle.com/ - My site for Source Engine Level Design
http://therewillbescience.com/ - Portal 2, Lab Rat
http://www.moddb.com/mods/portal-2-lab-rat - Portal 2, Lab Rat (MODDB)
Great! I still use Propper a lot, so I'll take a good look to the video and improve my way of using it, mate! 
useful tools and stuff here on TWP 
[spoiler]
[/spoiler]