Doug- were you looking at the same website? unless my monitor is way off kilter (I doubt it - I calibrate it), everything on that site is warmtone. Also, everything there is a digigraph - the manipulations are obvious, and he's offering them in a variety of sizes.
Scott, I guess cool-tone is in the eye of the monitor; but my Mac, which is calibrated via PS, suggests more grey scale tones in his images. Definitely not a Palladium or dev'ed in warm potassium oxalate, at least not the 1st two portfolios.
As to workflow, I'd suspect digital negatives since his camera appears to be only 8X10.
Considering that, in his bio, he's shooting with a large format camera, why don't we just assume that is what he used for the images and discuss, instead, how beautiful they are?
No idea what's going to happen next, but I'm hoping it involves being wrist deep in chemicals come the weekend.
Maybe I'm seeing something that isn't there, but to me the night exposures don't look realistic - they look manipulated in photoshop. They look and feel to me like he did multiple scans at different scanning exposures and then composited them to make digital negatives, which he has to do (at least the digital negative bit) in order to offer prints from 9x12 to 20x30- if these were straight prints from the in-camera negative, then they'd be 8x10 only.