This depends on the amount of coins that you are going to store. If we are talking about large amounts that I'd definitely not recommend it. I'm not familiar with Ledger Nano software (I have one, but have never used it). Is there an option to create a backup? What if the hardware itself fails? You have to consider these things.

I am a borderline paranoid guy when it comes to financial matters, including BTC.  Why not store some BTC in both?  I am familiar with Ledger Nano, and I like it (I also like the Trezor).  The Ledger Nano also has a way to recover your BTC if the unit gets lost.

I do not know Armory, so cannot comment on that.

In general, having your BTC is a couple of different places just seems wise.

Bitcoin is dead.

Really?
For begging you should send your picture, proving that you live in a carton box having 1 leg and being blind.

But maybe the mysterious dev is generous.....

If not, just sell some of the other coins. It's not that difficult

SCAM

There were 325blocks of premine. read pages 25 to 30. It'll explain a lot

Notes:
-post below is not intended to you or anyone in the quote
-post below is intended to all the guys that rent 1-2-5-10GH of power and wipe out every single coin that starts last weeks

Dear guys,

Your actions like described above are not in the help of the crypto community, you are damaging the whole idea, not us. In a fiction dream which you follow and a greed to make more money you wipe every single hope left in the community. Why ? Because last dozen of coins launched were raped out from the very start with rented power, no giving any chance to average 10-50Mh user here for at least a chance. And for sure i'm not telling this because i'm from the affected users or because i'm jealous of what you do. I'm telling you this from my own experience, and how i killed a small coin and it's future with a single small asic device. Mined it like crazy and dump all on the exchange until every **** single order is gone - and what I got 0.5 BTC and realized that I have done the stupidest thing ever because of a greed. I took that less and not followed that pattern since then. Only good things happen to me and my trades till then. So please, don't dump all the rented power on one place, at least spread it on different coins ! If everyone of you check the major pools you will see the sections with offline pools and such that will be decommissioned soon. You all had some trades and made money from them, but why we should kill them ? Because of the constant race to catch the first 100 blocks, dump them and continue to the next one ? Don't you want to have stable coins, mine stable coin and trade with profit stable coins ? Then we all should take our lessons from the past/history.

If at least +1 person that like the idea and follow it, then it's worth the writing.

Have a good night,