What I do is to use nothing but a 2" netpot for clones. I stick the cutting all the way through the bottom of the netpot for a secondary support. After they have roots, I simply take the whole thing, even the netpot, and put into my grow medium. Works perfectly, and doesn't disturb any new roots.
I have spent the time to actually cut the pot off the bottom and it makes no difference. For the price of a netpot, it's worth it to me to make it simple, then I just throw the netpot away after I harvest.