roll hemmer to sew true lap seam on single needle sewing machine (instead of flat felled seam)

I haven't tried using a hemmer with a single needle machine, but I have thought about it. I do have a twin needle machine and a lap-seam folder that I've been practicing with and I love the heck out of it. I purchased my folders from ebay and get them for around $20 each. I've been meaning to try a roll hemming attachment on my single needle machine and then run a second line of stitching, but got the twin needle machine before I gave it a try. I don't see why it wouldn't work; you'd just make two passed through the sewing machine instead of the single pass through a lap seam folder & twin needle. Working no-see-um mesh netting was an absolute pain to get to fold right through the lap seam folder (and I have a needle feed machine), but I found that using a teflon foot, less foot pressure, and prefolding 10" sections before I run them through the folder, while keeping slight tension on both sides of the folder has helped immensely, though I'd still be interested in learning any tips from more experience sewers.

There have been other recent threads about this

If you are a manufacturer, doing two passes takes more time, if you can do it in one pass it saves money

If you're just making a few, extra time doesn't matter

Flat felled seam is just as strong, or at least plenty strong enough – you might want to do a third row of stitching

Lap and flat felled both have stitches that go entirely through fabric, so they have to be sealed just the same