I've read a lot about RSC as I'm strongly interested on working these pure landrace, hoping to find the best phenos
As it's collected directly from farmers, these strains had no chance to adapt with some indoor repetitive growth. These have two main consequences for us.
Most seeds aren't going to germinate because when they're harvested in winter, they are asleep for a while, in dormancy, waiting for a better season.
What you need to do is put then in a fridge lets say 5 days, then 3 days in the freezer, then another 5 days in the fridge. After than you'll get good a germination result.
Then, (but not necessarily for all strains) we can read that people are complaining about hermaphrodism.
What RSC says about it is that their strains are made for outdoor growing and in these good conditions you won't get hermaphrodism issues.
However I've seen many growers avoiding this issue indoor by drastically reducing nutriments doses. These plants are quite sensible to the stress indoor growing induce for them, one way around it is to avoid mineral ferts and to prefer a poor fert. soil with slow diffusion nutriments, preferably organic amendments.