I have a 337 (external hammer) AirLite Ti. I carry it a lot, but don't shoot it very much. It is s-o-o-o-o-o light--when you hold it unloaded, it feels like anything but a real gun. Fully loaded, it weighs less than a pound, so you can carry it about anywhere.
In cool weather, I use the inside pocket of my jacket, and a Hedley pocket holster. In hot weather, I use a Coronado Leather Stealth waist pack, and sometimes I forget the gun is actually there.
Target shooting can be punishing; it depends on whether your load is +p or not, or either a light or heavy round. The WORST ammo on my hand was Fiocchi 158gr. FMJ...it HURT...ten rounds was all I could handle. Lighter rounds such as American Eagle or Blazer 130gr. were manageable. My carry load is Cor-Bon 125gr. JHP +P. I have shot these rounds, and it isn't that bad--nothing like those Fiocchis.
One more thing--it is highly recommended by S&W that you DO NOT shoot lead nosed bullets. Sometimes the recoil is so severe, that the soft lead can actually come unseated, move forward, and freeze up the cylinder.
My gun came with Uncle Mike's Boot grips. The newer AirLite PD's come with Hogue Bantams. I switched mine to Hogue and I like them much better...also, the Bantams are 0.8 oz. lighter that Uncle Mike's. So, my featherweight gun is even MORE feathery.