A faster WinFE build is available on http://winfe.wordpress.com/ that includes a script to add XWF to the build. Of course, you have to have a license for XWF for the script to add it to the build. As of now, it includes FTK Imager and dd tools, with more on the way to add. The build method is a beta only because more apps are being added that need to be tested. Other than that, it works great with FTK Imager, XWF, and a few other small apps. The goal is to put several imaging options on it for user preference.
Have 10 minutes to spare? Then you can build a WinFE bootable USB or CD with XWF installed on it.
There is no difference between the write protection in this faster build as it uses Colin Ramsden's write protection application, but the main difference is that you can build a WinFE ISO file in less than 5 minutes, start to finish. You can burn it to a CD or make a bootable USB within 5 more minutes, giving you a WinFE in about 10 minutes time, starting from pushing the button and having a WinFE CD/DVD/USB in your hand.
Although this is meant to be the fastest method to build an acquisition boot OS, with X-Ways, you can still do a heck of a lot more than just imaging with WinFE. And just because it only takes 10 minutes doesn't mean WinFE is a minor forensic tool. With XWF, WinFE is way more than just something you can throw together to image. It's really neat.