Hi Joker,
Thought I'd answer your question first as you have helped me out with amps a lot in the past!
Just picked my Tonehammer up today and yes it can go straight to overdrive. Just leave the 'AGS' (right switch) on then use the 'Engage' (left button) as your on/off switch.
Concerning this thread as a whole, my initial thoughts are that the Sansamp would be considered more of an Amp simulator doing different forms of amp sounds and overdrive, while the Tonehammer is more of an AG500SC with a D.I. and E.Q.'able overdrive in a pedal. So, while similar in principle, aren't actually for 100% the same purpose.
B.T.W. The Tonehammer Rocks!![]()
good stuff, thx for the heads up!
and good to know i steered at least one person in the right direction...

Stop keeping me in suspense.