I agree with some things in that article and disagree with others. Overall it was good. I'll start with my disagreements. The .357 offers a significant power increase over the .38 in 2" guns. Not many can handle them, but for those of us who can the power is worth it IMO. My wife and I both tried 110 gr. DPX +P and Speer SB +P side by side in her 3" model 60. We both felt that the recoil was indistinguishable between them.
Agreement; the ballistic test of DPX is quite comparable to the results I got in Perma-Gel. In my case Speer SB +P didn't expand in four layer denim, but every other test I've seen online showed that it did. I just think my denim must be extra evil or something.
The prestressed lines in the bullet were visible so that bullet was on the very edge of it's expansion threshold. The Hornady .38 FTX results mimmicked the results I got with FTX in .380.
To answer Robert's original question, all I have to offer is internet rumor, but the buzzz, and I never hear anything contrary, is that the SB+P is working well on the street. Gel tests indicate the same. If SB+P is working well SB .357 can only be even better (of course shot placement being equal). SB .357 did better in my four layer test. It expanded very well.