I would use my 4" Taurus Ti Tracker in .357 mag. it weighs. 28 oz, has a 7-shot capacity.

My pocket gun would be a S&W Airweight Bodyguard 638,

I have a 4 in Model 28 and a Rossi SS 92 with a 20" barrel to go with them.

I would be fine. Handicapped a bit but more lethal in some ways than my .380, 9's and .40.