I do the first seam with an overlocker which trims as it sews. I then turn it inside out, press and sew the final seam on the sewing machine.
If I don't use an overlocker I always trim back the first seam to about 1/8th inch, turn inside out,press and sew. I'm like Chris, I don't like anything to slow me down when I sew.
I'll show you the overlocker when you come to pick up your skopos,Bernie.