I didn't "abandon" BTC for silver, I simply think it's not a good idea to have every single cent of your wealth in BTC, which I did for years and don't really feel comfortable doing so anymore. You can't even sleep at night doing that. I use metals more as a savings account and Bitcoin as a checking account now and sleep like a rock.
I wouldn't put 100% of net worth in any one asset. Who could sleep at night if they had all their savings invested in a speculative asset.
Near-term (until 2018 at least) for savings I would choose the US dollar.
Whether I would buy gold, food, ammo, other crypto that isn't yet available, or real estate in 2018ish, depends on my observations at that time. I will not make decision prematurely that doesn't need to be made now.
Silver would be a highly speculative asset, thus I'd prefer crypto. You are trying to get the best of both: huge upside and reliable store-of-value. I expect you will be disappointed.