I wear revolvers daily. Usually a Ruger SP101.
I make my holsters with a hammer guard front and back. I like the retention. If I could stand on my head, my revolver will stay in the holster.
Reholstering is no problem. I practice a lot. I have been involved with carrying handguns off an on professionally and privately for almost 40 years.
I recommend buying a revolver and carry concealed with whatever design you come up with.
I do not carry IWB but I have included a photo of a holster that can be worn IWB or OWB by attaching the straps to the holster with screws.