I have the same drive (actually its the 404, small diff) and its great. It is just a little finnicky with the connections for usb (internal header) when a new OS is installed. It is always great to have more versatility for your computer. That is exactly why ConsciousTech keeps one in his shop computers: if you have a need, it is always good to be able to satisfy that need.
Look at it this way: if you get a floppy you are out, what, 20 bucks? But if you don't and you find you need one (rare, but it happens eventually) you will have to buy one full price and it might be pushin 40 bucks. Oh yeah, and you will be out anywhere to a few hours to several days depending on how you aquire said drive. My advice: get one that is on sale and that you like. You don't necessarily need one right off the bat (most of the time) and you can do some shopping in the mean time. I was once shopping for floppy drives and found a company that was selling them in like 30 different colors for about 10 bucks a piece after shipping. Unfortunately that website has slipped my memory, as it has been almost 4 years since I saw it.
As always, do your research. Floppy drives are rarely a hinderance, and for the price, they are usually a pretty good idea to at least have around.