Am really of the traditional type; don't hold all assets in one wallet. This is hinged on the fear of hack. If there is a cyber-attack, the hacker has access to all your alts and coins.
However, this Holders wallet sounds good. May I will check it out.
Speaking of alts, there's an alt I found recently and have done lots of research about the project. In my personal opinion, the project is strong. Just recently, they signed a partnership with IBM to further strengthen digital assets management system.
MPCXPLATFORM is currently running a double IEOs on OOOBTC and ProBit. XDMC price is dope. Offering at $0.06 with discount upto $0.04 per token.