alt clone

I have two identical systems p740 with 2 lpars in each server. I dont want to install os from scratch on each lpar neither I want to use nim nor mksysb. Will it work perfectly if I install a fresh OS on 1 lpar and do alt disk clone for other lpras. My each lpar is having 2 physical disks.
Now if I do disk clone then on first server how do i remove the alt rootvg entry cause i have moved the hdisk1 from 1st server to 2 server. Do i need to just export the vg alternate rootvg. Its just for testing.

Regards,

VJM