I do not have Lichen Planus. However, several people on the forum do have it and there have been various threads concerning Lichen Planus on the forum.
My research has led me to the same conclusions, that Hepatitis C infection can trigger Lichen Planus. In most of the research it states that Lichen Planus is most likely an Autoimmune Disorder trigger by Hep C, other infections, some other triggers. Apparently, stress can also be a factor.
To answer your question about whether Lichen Planus will resolve following SVR, I really do not know for sure. If Lichen Planus is an Autoimmune Disorder, as it is felt to be, then it may wax and wane, go into remission, as some Autoimmune Disorders do. In the articles I have read about Lichen Planus, it seems it is common for it to go into remission or disappear after 18-24 months. This, however, is not always the case.
My own personaly opinion is that attaining SVR and thus getting rid of the trigger (or one of the triggers), may aid in keeping the Lichen Planus in remission, once you go into remission. But I don't think there is any guarantee of that.
You have probably already read these articles, but if not, here are a couple:
http://www.mayoclinic.org/diseases-conditions/lichen-planus/basics/definition/con-20026040
http://www.dermnetnz.org/scaly/lichen-planus.html
http://hcvadvocate.org/hepatitis/factsheets_pdf/Extrahepatic.pdf
Best of luck with your upcoming treatment.
http://www.medhelp.org/forums/Hepatitis-C-Post-Treatment-Issues/show/1670
You might want to check out this other forum which may help. Have a great day!
jules