Good advice.
Using an alternate cryptocurrency client would be a great way to get many people to install a hidden virus that targets Bitcoin users.
If you have a significant amount of Bitcoins, I wouldn't run other clients on the same computer until the alternates have developed trust over a longer period of time... I'm probably on the paranoid side of things though.
These new cryptocurrencies are interesting, and it will be fascinating to see how it will all play out.
I agree, recently I have started to read some articles and follow the changing in rates of the new cryptocurrencies. I hope there will be placd for them in future.