Originally Posted by
qbnkelt But if I jailbreak my 5s after I get my 6 then I can play and learn safely without risking my day to day with my primary device....no???
Talk to me baby!!!!

Lil there are a great many things to JBing your phone and in some cases for certain people it is the right thing to do and it might be for you. Well here I go again so I hope I don't get in trouble...LOL Yoiu have limited knowledge of doing this and to do it with a 5S I personally would not.
Many Developers when doing a JB or tweaking and building new apps will buy an iPod touch to do it because it cost little money and a good device to practice.
Also you are right about what you asked in your original question here, I just wanted to add that to it.
I am not telling you not to do it, Just know what you are getting into, Spend time in that section and talk to others in here and ask how they feel.