Thats flashable in ra recovery? This is what I want to do and have done in the past (I lost the file in a computer crash) it was posted by novox77. I pm'd him but he hasnt been on in about a week.
"Just flash clockwork with ROM manager when you want to use its functions. When done, flash amon back.
And in terms of having 2 recoveries at once, I came up with something:
Flash the recovery that you prefer. Call this one your permanent recovery image. Now, download a .zip file for the other recovery image and keep it on your SD card.
When you boot into recovery, it will load your permanent one. But if you use the recovery to flash the zip from SD card, you will instantly get the other recovery. Now you have access to the other recovery's features/nandroids. But when you reboot, it automatically reverts back to your permanent one, because the change never has a chance to commit.
I had to do this when I boot looped my phone, and my recovery image was RA instead of clockwork. I needed to restore a nandroid made with clockwork, but RA can't read the clockwork images. So I temp-flashed clockwork, restored my nandroid backup, and I was back running. And RA was still my recovery image."
Here is the thread he said it in
http://androidforums.com/evo-4g-all-things-root/170541-possible-switch-clockwork-amon-recovery.html