I have that EXACT N Frame four inch,,
The gun is way more comfortable simply carrying it in my pocket than any belt holster
(I am similar age, except recently, I passed 70! )

I use a little $6 pistol pocket holster from Amazon, to cover and pad the muzzle.
No, the holster does not fit the gun, it simply covers the muzzle, to keep pocket fuzz out,,

I have carried the 629 extensively over the last 2 months, we have had dozens of daytime black bear sightings.

I have carried the 629 dozens of hours per week like this .

Maybe one of those holsters with two loops spread apart by a foot or more would mimic my pocket carry.
I will not look for a holster until I wear out a pair of pants,,
that has not been an issue,, so far.