Yeah, I've still got a 473nm DPSS sitting around myself. The beam specs on those suckers are great, but DPSS certainly has its drawbacks including being really large just to get to ~150mw.
The 473nm diodes (whatever they really are) are certainly more practical for about the same power as my old DPSS. Unfortunately I only bought one, but I would buy more if another lot came up for sale. In my case, I've decided to use my one for graphics on a wall that is treated with glow in the dark paint. This paint will glow when hit with 450nm (albeit not anywhere near as well as it does with 405nm), so I think using 473nm instead will allow me to do RGB graphics on the walls without leaving any glowing trails.
-David
"Help, help, I'm being repressed!"