Yes, I'm using it to hold a bunch of altcoins.

It's much better than Jaxx because they have a team that actually care and their support is actually knowledgeable and will try to answer your queries to the best ability they possibly can. This is what I have discovered first hand when I had a question about their service.

Will I recommend them for storage of bitcoins? Absolutely. And it's much more secure than an exchange, since there is no chance of them running a fractional reserve and hacks will not be centralised.

But if you are storing large amounts, make sure you get a cold wallet instead of using exodus or even other desktop clients, since those are only as secure as your computer.