I carry both
Lately it has been:
S&W 337 pocket carry loaded with 38spl +P Hornady Critical Defense
S&W M60 belt holster loaded with 357 magnum hydro-shoks
Two speedloader strips with 38spl +P Hornady Critical Defense
I like to carry this combo because I only have to have one type of ammo on me to use in both.
Sometimes I will carry one of my 1911's or my Walther PPS