Electrum Offline Storage - two different OS, multiple wallets Regarding the instructions to create watch-only wallets in Electrum, I am clear on the intial setup and functionality, signing transactions, etc. but I have a few questions about going forward:


Is it problematic to use two different OS (Windows on a Chromebook for offline comp along with OSX for watch-only comp).  Will Electrum have any problems going back and forth between two different OS? 
As I make more transactions, is there any mistake I can make that can un-sync the two wallets? (I am mainly concerned about change addresses).  Going forward, can I always rely that I will be able to access newly generated private keys by expanding the gap limit and/or adding change addresses in the console?
Can I manage a separate seeded wallet on my watch-only comp for smaller amounts or is this not reccomended?  


I am trying to be as secure as possible without having to learn Linux.  It has taken me long enough to figure out bitcoin and Electrum in general!  Thank you so much.
This can easily be done and due to Bitcoin mechanics, you are going to be pretty safe. Electrum wallets cannot be desynced, maybe become inaccurate but the same seed will always give you access to the corresponding wallet and its bitcoins. Electrum inaccuracies in balance and transaction history rectify themselves over time. Just restore from seed on the other computers to set your wallet up on multiple computers.

Why does this work out?

Bitcoin does a neat thing with transactions and history. I won't go into all of it but the blockchain makes working between two computers easy. Your seed is the deterministic private keys for 10 addresses on electrum. This will always be true, on any machine, anywhere in the universe (unless a bug breaks it on a computer).

As long as you have the private keys, you have access to all funds sent to the corresponding public addresses of the private key. Even if the wallet is offline and detached, it can still access value. Imagine the electrum seed as a key to a coin safe, you can have as many duplicates of key as you want, as long as they are identical they will open the coin safe. 

The balance of your addresses are purely derived from info available to anyone on the Bitcoin network, your balance is not dependent on your Electrum program, computer, or identity. If you sent me an address, I could tell you the balance. To get your balance, Electrum queries the many Electrum nodes to sync up. The balance can be wrong on multiple computers but give it a few seconds to correct itself.