Unless Link has worked out a way (?), I think this is one for the wish list. Sorry.
You can save your own Sketch Render settings by editing the SketchPreset.txt file.
On a PC it is found at: C:\Program Files\Graphisoft\ArchiCAD 9\Add-Ons\Visualisation\SketchTextures
I can't recall where to find it on a mac, but it should be in your library somewhere - you can alays doa search for SketchPreset.txt
Open the file and copy an existing style, from Preset to EndPreset.
Eg.
Preset: 6B_Artist
BasicTabPage:
LineStyle: 07_Graphite
LineColorMode: 2 [2-CUSTOM, 1-ELEMENT, 0-STYLE]:
Red: 60 [0 - 255]
Green: 60 [0 - 255]
Blue: 60 [0 - 255]
Hatching: ON [ON/OFF]
Shadow: ON [ON/OFF]
EndTabPage
EnhancementsTabPage:
Antialiasing: 2 [0 - 4]
AirPerspective: 40 [0 - 100]
PaperRoughness: 50 [0 - 100]
AlphaForRoughness: ON [ON/OFF]
EndTabPage
LineTabPage:
Thickness: 35 [0 - 100]
Distortion: 35 [0 - 100]
Overstretch: 16 [-50 - 50]
EndTabPage
HatchTabPage:
Thickness: 30 [0 - 100]
Distortion: 40 [0 - 100]
Overstretch: 9 [-50 - 50]
ClarifyRemoteArea: OFF [ON/OFF]
ClarifyRemoteAreaLevel: 50 [0 - 100]
EndTabPage
ShadowTabPage:
Thickness: 30 [0 - 100]
Distortion: 40 [0 - 100]
Overstretch: 6 [-50 - 50]
Darkness: 75 [0 - 100]
Spacing: 10 [0 - 100]
EndTabPage
EndPreset
Then paste this back into the file and rename it. In the above case rename 6B_Artist to whatever you want to call the new preset. Then you simply need to match the figures with what you want in your sketch render. It's pretty simple from there - just save the file and next time you go into the Photorender Settings dialog, your new preset will be available.
I don't know of a way to save Internal Engine or Lightworks Photorender presets.
I have wished for this before, but I still think it is worth wishing for again! Eric mentioned using viewsets to save these settings and he is absolutely right. Don't forget that the marqueed area will also be saved if you need it. So this can be powerful, but it is more cumbersome than simply having a Save As button in our Photorendering dialog, as we do with Display Options, for example.
Cheers,
Link.