Not sure if you've read this.

I feel like it's the best option if you have money in an existing IRA/401K and want the ability to hold the majority of keys in a multisig to get access to BTC. Solera monitors the addresses but can't do shit with the funds. If you move the funds you pay the taxes and penalty. There's a key check every 90 days to make sure you are still in possession of your keys. Also, if the whole system goes tits up and taxes and what not don't matter anymore, you can move the Bitcoin without notifying anyone