OP: It depends
I have a 329PD and wouldn't be without it.
It's not fun to shoot. It's okay w/ powder puff loads, but not fun at all with full house loads. It shoots to a very different point of aim with powder puff loads, so the practice-with-mild-carry-full-house strategy doean't work as well as with other revolvers I have.
If I was travelling by boat or horseback, or fishing for the afternoon, I'd carry a steel gun. But I backpack, for ten days or two weeks trips, all summer long in a good year. I'm the cut-your-toothbrush-handle-to-save-weight kind of hiker. I never carried before the 329. Heck, 6 cartridges are a third of a pound, and I agonize over whether I really need to carry a full cylinder
.
For that mode of travel, the 329 is the bee's knees - because I'd leave anything heavier at home. But it's not fun to shoot.
(and, of course, bear defense is a difficult marksmanship problem, so you have to practice. In the spring I practice up with a 629, and then shoot a dozen rounds of Garrett's through the 329 to remind myself how bad it is, then carry it all summer)