Will you sell the btc and get the ALTCOIN? It makes a lot of sense if you do that. But never switch the dollar. Otherwise you can not make money.
Why not? What is your purpose when you are trading or investing in Bitcoin?
Do you only want to show you are a Bitcoin user?
No, I am sure you want to make more money, and at the moment, Bitcoin is not a legal currency has accepted by the government.
Only Dollar and national currencies can see as the currency for using.