The P232 is more bulky than a J-frame, bro. Pictures:
SIDE VIEW - S&W 37 AIRWEIGHT, .38 SPECIAL vs. SIG P232, .380 ACP
TOP VIEW - S&W 37 AIRWEIGHT, .38 SPECIAL vs. SIG P232, .380 ACP
...
With both guns loaded, the S&W 37 weighs less than half of what the P232 does.
You'd be better off with a polymer .380 or an airweight snubnose revolver, bro.
The S&W 37 is my favorite carry gun. I use it the most often out of my collection.