Love your new revolver.I bought my first humpback a blue model 38 from a retired deputy from northern MI.He told me it had been his partners who kept it in a jacket pocket and always approached a vehicle with his hand on pocket.I gave it to my teenage daughter to go along with her German shepherd.At that time almost 30 years ago I worked a lot of nights and was a single parent.I replaced it with a 638 that I still carry.
For the longest time I couldn't find a Model 38 in California. Then stumbled across a few of them all at once. This is a Michigan State Trooper type from about 1965 IIRC - stainless cylinder is as factory, not a "pinto" type in classic sense.
I like my 638, but I am a fan of "J" frames...I carried my model 60 for decades with Bianchi Lightning grips which mimic the humpback.
Most, but not all the J frames....