The original Style G has been abandoned due to problems with Gimp aborting as well as with texture filling prfecision.
This version 2 uses a completely different procedure.
After experiments done in the past days, it's ready to be released (no pending errors or requests for en enhancements)
Here the Style G plug-in (version 2 to keep track that there was an original different process)

Here 3 outcomes using the same source, showing the use of the option for the lines look.
Obviously with this subject, the best option is "curved lines", the other two options ("horizontal" and "vertical" are more suitable for landscapes or cityscapes having respectively an horizontal or vertical shape)

dinasset, I'll try it.

Thanks, level_0, you found a good image to apply "horizontal" strokes.
Great.

Well, it is so fabulous though. I want to know more about the effect.

Superb to look at! How did you do this?

Just try yourself downloading the filter on post#1