OTA update on new Rooted Evo

I recently got the HTC EVO,not the Shift.The original Evo. I rooted the device with Unrevoked 3 and left the stock rom,radio.I mostly rooted the device to get free mobile hotspot,and to remove bloatware.I know i will probly have to install a custom kernel to get the free mobile hotspot, but I mainly have just one question. Since my Evo is rooted,but still with stock everything, will it still be able to recieve OTA updates,or will i have to install update.zip to my sdcard and update thru bootloader. Ive read that as long as the rom is still stock it will recieve OTA updates,but it might unroot my Evo in the OTA update process,which doesnt bother me.Its very simple to root.I rooted my Incredible,a Huaweii Ascend,and my EVO.Ive also heard that it wont update OTA at all if its rooted. Also is unrooting the Evo as easy as using/running Unrevoked s-off? Or is there a good instruction set on unrooting the Evo via Unrevoked. Thanks for any/all info. Ive been flashing/modding WM devices for years,but only been using Android for about 3-4 months. Thanks again. Sorry for the long post.