Fair point.
Whether Mitt Romney is a conservative or a moderate is really a matter of which Mitt Romney one means. (Since he is the quintessential flip-flopper, Romney can be quoted on either side of several different issues.)
Still, I tend to believe that, if elected, Romney will govern as a conservative; if for no other reason than pure self-interest: He would surely prefer to dispel any questions as regarding his conservative pedigree, so as to position himself favorably for re-election in 2016.
I tend to believe the Etch-A-Sketch comment made by his own campaign manager.