[Q] Philz Kernel - will it stay?

I recently loaded Philz Kernel and also rooted my Galaxy Note.

I would like to return to it being not rooted so that Sky Go will work. I have tried a number of changes to regain the not rooted status but without success.

I would like to keep Philz Kernel for the ease of use of it.

I am now being prompted to install JB (which I have tried before but without great success - problem with the bluetooth in my car not detecting contacts) - if I let the stock OTA JB install will I then return to being not rooted?

After using stock OTA JB will Philz kernel still be present or will it have also been replaced,

Ideally I would like to have stock JB and Philz kernel but I dont know if these are mutually exclusive.

I apologise if these are very basic questions to which I should know the answer.