I wouldn’t store a S&W revolver the way your pistols are stored. The nylon holster-like door-attached gun holders are going to wear your classic blued finish every single time it goes in or out, just like a holster would.

Further, the dessicant in the safe is a good idea but the holders will do their level best to attract and retain moisture, open air on pistol racks are far better for storage. If your safe sits in a dry environment, it probably is no issue. If it sits in a damp basement, those holster-like devices will try to hold moisture and apply that moisture to handguns directly.