I also have an 8 3/8" M25-5 in 45 Colt. It is blue with all three T's. Super accurate gun with my reloads.
Have yet to shoot the 4". I have a 45/8" Blackhawk Ruger that is super accurate, so no need to shoot the S&W.
All my holsters are cross draw for riding on my 4 wheeler. Thanks, Big Larry