This might seem unconventional, but I've used a Bianchi 3S "Pistol Pocket" for AIWB cross-draw carry while seated in my vehicle. It works, isn't uncomfortable (for me) and is a nicely made holster for the money to boot, but it's also a little on the large side for a J-frame (it's more suited for a S&W M-10 snub or a Colt DS).

I've actually been considering a Ritchie Leather Co. "Stinger," which is essentially an Alessi APX made by Skip Ritchie.