I have a question about  wallets which use different services to send/recieve bitcoin.  No client except the bitcoin-core client uses the full chain downloaded.

Will coin AT REST be safe in all these wallets which store the private keys on your device (not web based -etc).

Jaxx
Copay
mycelium
Electrum
multibit
etc,

For how long will they be safe?  Will any of these wallets, when a coin is spent, be using a different version?  Is there any timeline or statements from each of these wallets on their chain usage?  Copay uses Bitpay, etc.  maybe could someone put together a comprehensive list of which networks and what they will adopt?  

some info on electrum.
http://docs.electrum.org/en/latest/hardfork.html

Any help or input would be great peace of mind!  thz