Stepless Oetikers are the best deal going for the beverage professional. You slip it over the tubing, slide the tubing over the barb, position the clamp, crimp it on with your favorite crimping tool...and there you have it. It saves time over any other method. And time is money.
For homebrewers there are two other options. The worm clamp and the "clamp-tite" tool. I use the worm clamps on the shanks in my kegerator...They're not anywhere for someone to get snagged on...and I already own them. I can replace the tubing and re-use the clamps. So, I think they work well there.
I now use safety wire (stainless steel) for all my clamping needs now for everything else. Now...realize...it takes more time to tie a clamp using safety wire than either of the other two methods...but there are advantages in the long run that makes it worth it to me. 1) you can get over 200 clamps out of a $8 roll of stainless steel safety wire. 2) The clamp is nearly flush with the tubing, so you can slide the connection through bulkhead openings, and you can't really get snagged on the clamp. 3) easy to remove...you just snip the section that runs parallel to the tubing and it comes right off...in 2 seconds.
I've written the tool up somewhere on this forum as well as:
Message Board - Clamping Tool
It takes a few minutes to put a clamp on this way...but for me...not having to try to keep 10 different sizes of oetiker clamp in stock is a welcome relief...not to mention getting snagged on the pesky little "ear" sticking out. You can even single loop, double loop, triple loop your safety wire to hold just about anything, and any size. You'll like having this option around the house, the boat, the RV, the brew house... You can even use it to connect irrigation tubing in the yard...fix hose fittings...you name it.
Just thought I'd introduce another option that exists...