no, that will not work reliably.

if you read the manual at http://swarfer.github.io/sketchucam/sketchucamtoolbar.html#toolparameters under 'overhead gantry' you will know how to reverse inside and outside cuts.

if you read http://swarfer.github.io/sketchucam/howto_options.html#a4 you will know how to change the direction of pocket and plunge hole cuts.

another thing to try is to do a finishing cut (possibly opposite direction to the roughing cut).
to do this:
set bit diameter to be larger than it really is, say 0.2mm too big.
add inside and outside cutlines
generate gcode

now that gcode will leave the parts too big and holes too small by 0.1mm

now remove all those cuts
set the bit diameter to the true diameter.
add cutlines
(possibly turn off multipass, you might be able to do the final cut in one pass)
(possibly change direction too)
generate Gcode

now this gcode will cut that final 0.1mm off the outsides and insides of all the cuts.