voll: ds has no cap as the formula for chance to do 2x damg is -

=CS + (DS/100)*(100-CS)
lets say u got 200 DS as an exm

0+(2*-200) thus -200 now thats a bad thing thus no cap but only screwing it up, if u got cs some minor DS is fine but u will get diminishing returns aprox 1/3 less of the amount ds u got on
however if u have 100ds and 0 cs then by joe u always have double damg like the good ole 09 days :P

hoh: u defintely can, as any class can, it is all a matter of ur approach