Ahh, I got it now.
CM7 already has Xionia v013 kernal built into the Rom. So your good to go there.
And as I stated before, Reborn has picasticks v7 kernel built into the Rom. This is a good kernal also, and you can overclock with it. But ultimately, yes, you could run Xionia v013 with reborn if you wanted to. But I think you will need to flash the (Experimental AnyKernel Edition).
A main difference between the kernels is Picastick v7 does not have native ext2, ext3, ext4 support even though the change log says it does. So, if you want to use Link2SD, DarkTremor or some other app2sd scheme that requires an ext fs on the second sdcard partition, you will want to flash Xionia v13 experimental, which does have the ext2.ko, ext3.ko and ext4.ko modules loaded into /system/lib/modules. Link2SD may work with a second partition as vfat, though.