Windows version works fine, recently had device capture implemented (was my distraction I was talking about), but still needs a fair amount of work before I could consider it up to par with the original windows version. The original windows version has deinterlacing, game capture, plugins, and a lot of things that just won't be present at first. It will have the better device support first though, I promised way too many people that I would implement all the devices that have been having trouble first and foremost. Well, scene editing and image file support first, and then that.
Linux version has almost everything, thanks to crazy awesome linux programmers. Multiple types of audio/video captures. It's all going pretty nicely on there, but the problem is mostly package managers, ffmpeg, and compiling. On windows and mac, things are fairly easy for distributing because you can modularize the installation, but on linux you're typically supposed to rely on package managers, which is somewhat frustrating.