I don't have one of those Walthers. I do have a 3" 36-1 and a 3" 31-1. I've had other .380s - Interarms PPK, Sig 232, Bersa, Llama, etc. The wife still has a P3AT.
I just bought a 100rd pack of .380 FMJ the other day for the wife. I haven't seen any .38 in a while. Availibility thus depends when it comes to ammo and eventually .380 will catch up with demand.
Anyway, the general "pros" to .380 autos in these debates are - faster reload time, great capacity, sometimes lighter weight, sometimes better sights, sometimes less recoil. There also tends to be less muzzle blast until you get into the real micro .380s.
General pros to the snubs - reliable, simple, less maintenance, easier to use weak handed (no chance of limp wristing)
Same basic weight and similar bulk to a 3" steel J frame and you can simply tote one of the Baby Glocks like the 26 or 27. I continue to believe that these are the best of the compact guns if one wants more rounds or a bigger bullet than a J frame can deliver.