Doubts before buying i747 topic

Hello everybody,

My current device is a Captivate, and I'm thinking about upgrading to an i747. After doing some research in the forums I found out about knox, but find it a little bit confusing, let's see..

1) Has there been any known cases of devices that were shipped with a knox bootloader?

2) In a i747, what does a knox bootloader look like in Download Mode (as opposite to a non-knox one, does it say knox warranty void or something else?)

3) This is where I'm most confused. If you've got a knox bootloader, then you can't downgrade it, and can't flash anything except for new official otas? would anything except the ota void it? can you flash CM11 for example? and if it's void, that means that it's a hard brick? or does it still work? Can you go foward if it's void (again, like cm11)? :confused:

4) Let's say the one I get comes with 4.0, I can root and move freely between CM and stock as long as I don't flash 4.3?

I also have the option to go for a S4 Mini, but given it has the same issue and similar hw.. love the S3 screen :P

Thanks in advance!