Being a total Warren Haynes fan, I would say no. I had several conversations with Mike Soldano when I ordered my past 3 SLO's ( Used to be my main gigging amp ) They offer the Warren Haynes mod, which is a mini toggle next to the bright and clean/crunch toggles, and what it does is lower the amount of treble response and gain on the overdrive channel. Warren runs his gain at about 3 1/2 to 4 on the gain control, which actually is a fairly low gain setting. He just cranks the amp to get that power tube distortion. He also runs a straight ENGL cab with vintage 30's.
I have found that I need a little more gain because I play in small clubs at lower volumes. I can get pretty close using my SL2 with the gain set at 11 O'clock, treble and presence at 11 O'clock. mids at 1O'Clock, and Bass at Noon. No reverb as well. As far as getting the leslie simulation tones, I used to run the H&K Rotosphere just like he does, but found the DLS Rotosim was comparable with less noise. I'm sure he deals with the noise some other way.
Hope that helps