I hold my piggies on my knee, facing away from me. My pigs are old though, so they can't be bothered to try and move, if your piggies are nervous, you can towel them so they can't squirm as much. I have some quick stop - styptic powder beside me while I do this, as I have a black piggy, so it is hard to see how far I can clip them. I do a bit at a time with her. If yours are comfortable in a laid back sitting position, it should be fairly easy.
