script is ready 
Attachment:
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and works (maybe it could works even betterin a future, but finally is ready and does work !)
for the most impatient copy the code below,
then if you already have a .gmic file in your home directory (close to a gmic_def.1452 and to a gmic_fav files) paste there
If not just save as .gmic there (in windows you may use Notepad plus to save as .gmic ...don't forget the dot...
#@gimp PhotoComiX Graphic Boost : photocomix_boost, photocomix_boost
#
#here unsharp controls
#@gimp : sep = separator ()
#@gimp : note = note("Unsharp Mask controls" )
#@gimp : Radius = float(1.25,0,20 )
#@gimp : Darken = float(1.50,0,10 )
#@gimp : sep = separator ()
#@gimp : note = note("BW_Pencil Controls")
#here bw_pencil controls
#@gimp : Pencil Size = float(0.15,0,4)
#$3
#@gimp : Pencil Amplitude = float(14,0,200)
#$4
# Do you wish to Smooth the pencil component ?
#@gimp : sep = separator ()
#@gimp : Activate "Pencil Smoother" = bool(false)
#$5
#@gimp : note = note(" If unchecked the 3 sliders below are disabled ")
#if true this the options
#@gimp : Pencil Smoother Sharpness = float(0.5,0,2)
#$6
#@gimp : Pencil Smoother Edge Protection = float(0.45,0,1)
#$7
#@gimp : Pencil Smoother Smoothness = float (0.78,0,10)
#$8
#@gimp : sep = separator ()
# here options to merge
#@gimp : note = ("Merging Options")
#@gimp : Merging Option = choice(Hard Light, Multiply, Soft light , Color Burn ,Darken ,Stamp, 0verlay, Freeze)
#$9
#@gimp : sep = separator ()
#@gimp : Add Painter's Touch = bool(true)
#$10
#@gimp : note = note("If unchecked the 3 sliders below are disabled")
#@gimp : sep = separator ()
#@gimp : Painter's Touch Sharpness = float(0.5,0,2)
#$11
#@gimp : Painter's Edge Protection Flow = float(0.45,0,1)
#@gimp : Painter's Smoothness =float(0.78,0,10)
photocomix_boost :
-gimp_unsharp 1,$1,30,3,0,$2,0.40,1,0,0,0
--gimp_pencilbw $3,$4,0,0,0
-if {$5==0} -gimp_do_nothing[1] -elif {$5==1} -gimp_anisotropic_smoothing[1] 60,$6,$7,$8,1.1,0.8,30,2,0,1,1,0,1,0 -endif
-if {$9==0} -compose_hardlight[1,0] -elif {$9==1} -compose_multiply[1,0] -elif {$9==2} -compose_softlight[1,0] -elif {$9==3}
-compose_colorburn[1,0] -elif {$9==4} -compose_darken[1,0] -elif {$9==5} -compose_stamp[1,0] -elif {$9==6} -compose_overlay[1,0]
-elif {$9==7} -compose_freeze[1,0] -endif
-if {$10==0} -gimp_do_nothing[1] -elif {$10==1} -gimp_anisotropic_smoothing 60,$11,$12,$13,1.1,0.8,30,2,0,1,1,0,1,0 -endif