Yeah, installation is not required, so I must say, give it a shot.
I like the Win2x frontend for its simplicity. You can create icons within sub-categories and create shortcuts to said icons right on the desktop. So when you turn on your Wiz, the first thing you see is your wallpaper (as you would on a PC) followed by icons for whatever you like. I keep my most used emulators right on top so its real quick and easy to start playing things.
Also, installing is really easy. Just run the install.gpe and you're done. A few people have run into issues with this but if for whatever reason it doesn't work everyone I've read so far was able to fully restore their system using the standard firmware update software provided by GPH. So I wouldn't worry about bricking.