I believe that both the Apprentice and the Artisan European kits at CSUSA do require a tenon. As Wayne (Turncrazy43) noted, you do have an option for a no-tenon version with the PSI Designer kit which is their competitor to the European kit.
The tenons are fairly easy to make though, so I wouldn't necessarily advise against it for a new turner. If you want to practice before trying it on your real blank, you could tube up a cheap, featureless blank and turn a tenon on one end (or both for that matter).
Once you get a tenon of the right size on a practice blank, you could actually use it as a guide for your real blank. First turn the end of the blank down to the outer diameter of the center band then remove the bushing & replace it with the practice blank, then turn the tenon down to the diameter of the tenon on your practice blank.
Don't try to turn the entire width of the tenon at once - turn about 1/2 to 3/4 of the full width & when you get it down to the right diameter, stop the lathe & hold the center band up to it to see how much more you need to take off. Take very thin cuts of additional material & recheck with the lathe off until you get it to the exact width of the center band.
Edgar