The grip on that 650 doesn't look very pocket friendly. The "boot grip" on my M85 slides right into a pocket no problem. You need more grip, though, if you're carrying a .357 Magnum. I don't even consider the lightweight magnums. Might be okay for you, but I have fired a Smith airlite with hot magnums and it was not enjoyable. LOL I just got a Ruger SP101 and it's not too bad with 125 or 140 grain loads. 158s start to annoy me and 180s, well, they hurt. LOL But, that gun weighs almost as much as my medium frame guns, quells a good bit of recoil with weight, and it's not very pocket friendly. I carry it IWB. Frankly, I can carry a medium frame gun just as easy IWB, but I like the little gun. ;D I reckon I'd sell it before I'd sell my M85, though, because I do pocket carry a lot.
If I carried an airlite .357, I'd carry it with .38 specials loaded in it. But, why pay the price for a titanium gun when I got my 85UL for about $285? I mean, I KNOW I'm not going to shoot magnums out of a gun that's less than 20 ounces, this is a fact. But, if you can handle a 12 ounce full house magnum, go for it, just ain't for me and I've been shooting hard kicking magnums for a long time. I do know my limits of tolerance, though, LOL!