That's partly the reason I'm thinking a 3" would be good. OTOH I hear that if you polish the chambers (might as well if I'm getting them chamfered) brass is pretty easy to expel.
It never ceases to amaze me how many options there are... all with good / bad points...ugh.. Seriously considering going with my first thought and just getting a witness for me and a used 4" S&W for my wife...more guns more fun ;-)
Meum scapha volitare plenum anguillae