You didn't mention what model of 629. Since these can be had in anything from 3" snubbies to 8&3/8" full lug guns, why not get another model?
I have a 6.5" 629 Classic, but honestly wouldn't mind having another one. The 5" Classic is a little handier, and about as light a gun as I want to shoot with full power hard cast loads. There is also the 329 - light for full tilt loads, but very handy.