Nathan,
For belt holster, I chose a Kramer Vertical Scabbard holster for my S&W M629 Classic with 5" barrel. Fits well and holds pistol securely. For shoulder holster, I designed and made my own holster which holds pistol vertical. It is more comfortable and doesn't interfere with sitting down. Check out Lou Alessi's shoulder rigs on Lightning Arms website or call Lou for details. Really nice guy and his work is absolutely superb!
Good shooting and be safe.
LB