That's the 1's.I use just the samson clip on mic with a mic lead to the desk in my wedding band,as do the trumpet and trombone player.My mate has the full samson airline wireless unit and the great thing about them is you only have your mic on the bell and no power pack around your waist or attached to the sax.You just clip the mic on and your free.
The reason I don't use this system (and I know people that do) is threefold -
1) the sound is ok, but noticably not as good as Shure/AKG/SD Systems, and the capsule is not so well designed - feedback is much less likely with a better system.
2) the mic clip is not very stable - if you're dancing like a **** on stage like I have to do, because the full weight of transmitter and battery is all on a little clip it may fly off or snap (a trumpet player pal had three snap - he now uses the Shure system) - you're not that free!
3) you're stuck on one frequency - if the local mini cabs use the same one you'll be getting orders through, or if there's more than one radio onstage you have to be careful (the Shure is selectable)
Davey's right though, the best sound will always be from a wired mic - if it's balanced you get no loss of quality, which will be inevitable with a radio system.
Cheers,
Nick
P.S. I put off going for a radio because of the new radio legislation, but it's all still wrangling on, and I figured that since I use it every week I'd probably need a new radio kit by then anyway...